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Fulltext Plant regeneration and somatic embryogenesis from immature embryos derived through interspecific hybridization among different Carica species

Azad MA, Rabbani MG, Amin L

Int J Mol Sci, 2012;13(12):17065-76.
PMID: 23235330 DOI: 10.3390/ijms131217065

Plant regeneration and somatic embryogenesis through interspecific hybridization among different Carica species were studied for the development of a papaya ringspot virus-resistant variety. The maximum fruit sets were recorded from the cross of the native variety C. papaya cv. Shahi with the wild species C. cauliflora. The highest hybrid embryos were recorded at 90 days after pollination and the embryos were aborted at 150 days after pollination. The immature hybrid embryos were used for plant regeneration and somatic embryogenesis. The 90-day-old hybrid embryos from the cross of C. papaya cv. Shahi × C. cauliflora showed the highest percentage of germination, as well as plant regeneration on growth regulators free culture medium after 7 days pre-incubation on half-strength MS medium supplemented with 0.2 mg/L BAP, 0.5 mg/L NAA and 60 g/L sucrose. The 90-day-old hybrid embryos from the cross of C. papaya cv. Shahi × C. cauliflora produced maximum callus, as well as somatic embryos when cultured on half-strength MS medium containing 5 mg/L 2,4-D, 100 mg/L glutamine, 100 mg/L casein hydrolysate and 60 g/L sucrose. The somatic embryos were transferred into half-strength MS medium containing 0.5 mg/L BAP and 0.2 mg/L NAA and 60 g/L sucrose for maturation. The highest number of regenerated plants per hybrid embryo (10.33) was recorded from the cross of C. papaya cv. Shahi × C. cauliflora. Isoenzyme and dendrogram cluster analysis using UPGMA of the regenerated F(1) plantlets confirmed the presence of the hybrid plantlets.

Matched MeSH terms: Carica/embryology*; Carica/genetics
Fruit-specific expression of papaya subtilase gene

Othman R, Nuraziyan A

J Plant Physiol, 2010 Jan 15;167(2):131-7.
PMID: 19729222 DOI: 10.1016/j.jplph.2009.07.015

Subtilisin-like serine proteases (EC 3.4.21) consist of a widespread family of enzymes that is involved in various processes including in plants. The full-length cDNA (CpSUB1) and the corresponding genomic DNA for papaya subtilase have been obtained using rapid amplification of cDNA ends (RACEs) and PCR primer walking techniques, respectively. The cDNA clone contains an open reading frame of 2316bp encoding 772 amino acids with a calculated molecular mass of 82.6kDa and an isoelectric point (pI) of 8.97. The CpSUB1 gene is composed of nine exons and eight introns. The amino acid sequence encoded by CpSUB1 shared high identity (>60%) with the amino acid sequence of other plant subtilisin-like proteases. Sequence analysis of CpSUB1 revealed the presence of a possible signal peptide (25 amino acid residues) and an NH(2)-terminal prosequence (88 amino acid residues). In addition, papaya subtilase possesses the characteristic subtilisin catalytic triad amino acids namely Asp, His and Ser, together with the substrate-binding site, Asn. DNA hybridization analysis showed that subtilase gene exists as a single copy in the papaya genome. RNA hybridization analyses showed that expression of the subtilase transcripts was only detected in mesocarp but not in non-fruit tissues. Gene expression in fruit tissues reached the highest level during the ripening stage at which the fruits undergo dramatic softening process. Subsequently, pro-subtilase ( approximately 80kDa) was expressed as recombinant pro-enzyme ( approximately 97kDa), which was used to generate antiserum against papaya subtilase, anti-sub. Protein gel blot analysis using anti-sub towards total protein extracted from all ripening stages revealed that a protein with a molecular mass of approximately 70kDa reacted with the antiserum. Hence both RNA hybridization and protein gel blot analyses confirmed the presence of subtilase during papaya fruit ripening, pointing to its possible involvement in this important process.

Matched MeSH terms: Carica/enzymology*; Carica/genetics; Carica/metabolism
Fulltext RNA interference of 1-aminocyclopropane-1-carboxylic acid oxidase (ACO1 and ACO2) genes expression prolongs the shelf life of Eksotika (Carica papaya L.) papaya fruit

Sekeli R, Abdullah JO, Namasivayam P, Muda P, Abu Bakar UK, Yeong WC, et al.

Molecules, 2014 Jun 19;19(6):8350-62.
PMID: 24950439 DOI: 10.3390/molecules19068350

The purpose of this study was to evaluate the effectiveness of using RNA interference in down regulating the expression of 1-aminocyclopropane-1-carboxylic acid oxidase gene in Eksotika papaya. One-month old embryogenic calli were separately transformed with Agrobacterium strain LBA 4404 harbouring the three different RNAi pOpOff2 constructs bearing the 1-aminocyclopropane-1-carboxylic acid oxidase gene. A total of 176 putative transformed lines were produced from 15,000 calli transformed, selected, then regenerated on medium supplemented with kanamycin. Integration and expression of the targeted gene in putatively transformed lines were verified by PCR and real-time RT-PCR. Confined field evaluation of a total of 31 putative transgenic lines planted showed a knockdown expression of the targeted ACO1 and ACO2 genes in 13 lines, which required more than 8 days to achieve the full yellow colour (Index 6). Fruits harvested from lines pRNAiACO2 L2-9 and pRNAiACO1 L2 exhibited about 20 and 14 days extended post-harvest shelf life to reach Index 6, respectively. The total soluble solids contents of the fruits ranged from 11 to 14° Brix, a range similar to fruits from non-transformed, wild type seed-derived plants.

Matched MeSH terms: Carica/genetics; Carica/metabolism*; Carica/physiology
Fulltext Acceptability of novel antioxidant ice cream fortified with nutritous Carica papaya seed

Siti Radhiah Omar, Fauzan Aminuddin, Latiffah Karim, Nursyahida Suhaimi, Siti Nazirah Omar

Journal of Academia Universiti Teknologi MARA Negeri Sembilan, 2020;8(1):7-17.
MyJurnal

This research aimed to determine the total antioxidant activity and total phenolic content of the papaya
seeds. These papaya seeds then were introduced into the prepared ice cream to determine the effect of the
papaya seeds to the physicochemical and the acceptability of ice cream by making four different
formulations (Control, 1.0%, 2.0%, and 3.0% of papaya seeds). Two methods namely free radical
scavenging assay (DPPH) and ferric reducing antioxidant power (FRAP) were used to determine the total
antioxidant activity of the papaya seeds, whereas total phenolic content was determined by FolinCiocalteu’s method (TPC). The papaya seeds showed high total phenolic content in the TPC analysis result.
Furthermore, DPPH and FRAP showed high antioxidant activity of the papaya seeds. Acceptability of the
ice cream was conducted by sensory evaluation and the results showed that the control (0.0%) papaya seeds
ice cream formulation was the most favorable by the panelists followed by 1.0%, 2.0%, and 3.0% papaya
seeds formulation. In conclusion, the papaya seeds are proven to contain antioxidants by the results given
in DPPH, FRAP, and TPC tests. Surprisingly, the papaya seeds also did not affect the physicochemical of
the ice cream and the ice cream was accepted by the panelists.

Matched MeSH terms: Carica
Fulltext Erwinia mallotivora sp., a new pathogen of papaya (Carica papaya) in Peninsular Malaysia

Amin NM, Bunawan H, Redzuan RA, Jaganath IB

Int J Mol Sci, 2010;12(1):39-45.
PMID: 21339975 DOI: 10.3390/ijms12010039

Erwinia mallotivora was isolated from papaya infected with dieback disease showing the typical symptoms of greasy, water-soaked lesions and spots on leaves. Phylogenetic analysis of 16S rRNA gene sequences showed that the strain belonged to the genus Erwinia and was united in a monophyletic group with E. mallotivora DSM 4565 (AJ233414). Earlier studies had indicated that the causal agent for this disease was E. papayae. However, our current studies, through Koch's postulate, have confirmed that papaya dieback disease is caused by E. mallotivora. To our knowledge, this is the first new discovery of E. mallotivora as a causal agent of papaya dieback disease in Peninsular Malaysia. Previous reports have suggested that E. mallotivora causes leaf spot in Mallotus japonicus. However, this research confirms it also to be pathogenic to Carica papaya.

Matched MeSH terms: Carica/microbiology*
Evaluation of papaya seeds as a novel non-conventional low-cost adsorbent for removal of methylene blue

Hameed BH

J Hazard Mater, 2009 Mar 15;162(2-3):939-44.
PMID: 18606493 DOI: 10.1016/j.jhazmat.2008.05.120

The feasibility of using papaya seeds (PS), abundantly available waste in Malaysia, for the cationic dye (methylene blue) adsorption has been investigated. Batch adsorption studies were conducted to study the effects of contact time, initial concentration (50-360 mg/L), pH (3-10) and adsorbent dose (0.05-1.00 g) on the removal of methylene blue (MB) at temperature of 30 degrees C. The equilibrium data were analyzed by the Langmuir, the Freundlich and the Temkin isotherms. The data fitted well with the Langmuir model with a maximum adsorption capacity of 555.557 mg/g. The pseudo-second-order kinetics was the best for the adsorption of MB by PS with good correlation. The results demonstrated that the PS is very effective to remove methylene blue from aqueous solutions.

Matched MeSH terms: Carica/embryology*
Papaya beta-galactosidase/galactanase isoforms in differential cell wall hydrolysis and fruit softening during ripening

Lazan H, Ng SY, Goh LY, Ali ZM

Plant Physiol Biochem, 2004 Dec;42(11):847-53.
PMID: 15694277

The potential significance of the previously reported papaya (Carica papaya L.) beta-galactosidase/galactanase (beta-d-galactoside galactohydrolase; EC 3.2.1.23) isoforms, beta-gal I, II and III, as softening enzymes during ripening was evaluated for hydrolysis of pectins while still structurally attached to unripe fruit cell wall, and hemicelluloses that were already solubilized in 4 M alkali. The enzymes were capable of differentially hydrolyzing the cell wall as evidenced by increased pectin solubility, pectin depolymerization, and degradation of the alkali-soluble hemicelluloses (ASH). This enzyme catalyzed in vitro changes to the cell walls reflecting in part the changes that occur in situ during ripening. beta-Galactosidase II was most effective in hydrolyzing pectin, followed by beta-gal III and I. The reverse appeared to be true with respect to the hemicelluloses. Hemicellulose, which was already released from any architectural constraints, seemed to be hydrolyzed more extensively than the pectins. The ability of the beta-galactanases to markedly hydrolyze pectin and hemicellulose suggests that galactans provide a structural cross-linkage between the cell wall components. Collectively, the results support the case for a functional relevance of the papaya enzymes in softening related changes during ripening.

Matched MeSH terms: Carica/enzymology
The effects of papaya leaf juice for breastfeeding and working mothers on increasing prolactin hormone levels and infant's weight in Tangerang

Ikhlasiah M, Winarni LM, Poddar S, Bhaumik A

Enferm Clin, 2020 06;30 Suppl 5:202-205.
PMID: 32713569 DOI: 10.1016/j.enfcli.2019.11.054

Based on preliminary studies, it is known that 80% of working mothers fail to make exclusive breastfeeding, on average babies are given formula milk 2-4 months old and stop breastfeeding at 6-18 months of age. Papaya leaves are one of the galactagogues that contain quercetin which can activate the hormone prolactin and help increase breastmilk. The purpose of this study was to determine the effect of giving papaya leaf juice for nursing mothers who work toward increasing levels of the hormone prolactin and infant weight in Tangerang. The research design used was a pre-experimental model with one group pretest-posttest design. Samples taken as many as 10 mothers who have babies aged 0-6 months who have difficulty in breastfeeding because the amount of breastmilk was a little. The study was conducted in several clinics in Tangerang. The intervention was giving papaya leaf juice for 7 consecutive days. The results obtained from this study are as follows: 90% of mothers aged between 20 and 35 years, 70% of mothers have a history of spontaneous labor and have no complications at the time of delivery, 40% of mother's education is junior high school (SMP), and 70% of mothers are primiparas. The average increase in the amount of prolactin after the intervention was 19.59ng/ml, while the average weight gain of the newborn after the intervention was 165g. Wilcoxon test results for increased levels of the hormone prolactin p-value of 0.047<0.05 and for an increase in body weight of newborns p-value of 0.009<0.05. CONCLUSION: There is an effect of giving papaya leaf juice for nursing mothers who work on increasing levels of the hormone prolactin and infant weight in Tangerang. Papaya leaf juice can be a galactagogue for mothers who experience problems with a small amount of breastmilk.

Matched MeSH terms: Carica*
Effects of drying on total polyphenols content and antioxidant properties of Carica papaya leaves

Yap JY, Hii CL, Ong SP, Lim KH, Abas F, Pin KY

J Sci Food Agric, 2020 May;100(7):2932-2937.
PMID: 32031257 DOI: 10.1002/jsfa.10320

BACKGROUND: Papaya is widely grown in Malaysia and normally only the fruits are consumed. Other parts of the plant such as leaves, roots, bark, peel, seeds and pulp are also known to have medicinal properties and have been used to treat various diseases. Papaya leaves also contain flavonoids, alkaloids phenolic compounds and cynogenetic compounds, and are also reported to be able to treat dengue fever.
RESULTS: Studies were carried out on drying of papaya leaves using hot air (60, 70 and 80 °C), shade and freeze drying. Effective diffusivities were estimated ranging from 2.09 × 10-12 to 2.18 × 10-12 m2 s-1 from hot air drying, which are within the order of magnitudes reported for most agricultural and food products. The activation energy to initiate drying showed a relatively low value (2.11 kJ mol-1 ) as a result of the thin leave layer that eased moisture diffusion. In terms of total polyphenols content and antioxidant activities, freeze-dried sample showed a significantly higher (P

Matched MeSH terms: Carica/chemistry*
Fulltext Extract of Carica papaya L. leaves: Standardising its use in dengue fever

Ansari RM

Indian J Pharmacol, 2016 May-Jun;48(3):338-9.
PMID: 27298513 DOI: 10.4103/0253-7613.182892
Matched MeSH terms: Carica/chemistry*
Fulltext Draft Genome Sequence of Erwinia mallotivora BT-MARDI, Causative Agent of Papaya Dieback Disease

Redzuan RA, Abu Bakar N, Rozano L, Badrun R, Mat Amin N, Mohd Raih MF

Genome Announc, 2014;2(3).
PMID: 24812220 DOI: 10.1128/genomeA.00375-14

Erwinia mallotivora was isolated from papaya trees infected with dieback disease, which were planted at the Malaysian Agricultural Research and Development Institute (MARDI), Malaysia. Here, we report a draft genome sequence of E. mallotivora BT-MARDI, which offers an important source of information for understanding pathogen and host interaction during papaya dieback development.

Matched MeSH terms: Carica
Transcriptome-wide effect of DE-ETIOLATED1 (DET1) suppression in embryogenic callus of Carica papaya

Jamaluddin ND, Rohani ER, Mohd Noor N, Goh HH

J Plant Res, 2019 Mar;132(2):181-195.
PMID: 30649676 DOI: 10.1007/s10265-019-01086-x

Papaya is one of the most nutritional fruits, rich in vitamins, carotenoids, flavonoids and other antioxidants. Previous studies showed phytonutrient improvement without affecting quality in tomato fruit and rapeseed through the suppression of DE-ETIOLATED-1 (DET1), a negative regulator in photomorphogenesis. This study is conducted to study the effects of DET1 gene suppression in papaya embryogenic callus. Immature zygotic embryos were transformed with constitutive expression of a hairpin DET1 construct (hpDET1). PCR screening of transformed calli and reverse transcription quantitative PCR (RT-qPCR) verified that DET1 gene downregulation in two of the positive transformants. High-throughput cDNA 3' ends sequencing on DET1-suppressed and control calli for transcriptomic analysis of global gene expression identified a total of 452 significant (FDR

Matched MeSH terms: Carica/embryology; Carica/growth & development; Carica/metabolism*
Fulltext The effects of Carica papaya Linn. latex on the healing of burn wounds in rats

Ahmad Nazrun Shuid, Mohd Syukri Anwar, Ahmad Asmadi Yusof

Jurnal Sains Kesihatan Malaysia, 2005;3(2):39-47.
MyJurnal

This study was carried out to compare the rate of burn wound healing with the applications of the latex of Carica papaya Linn. (papaya) or of silver sulfadiazine cream (SSD). Partial and full thickness burn wound (2 cm x 2 cm) was induced on the dorsal part of anaesthetized rats by using heated metal plates. The rats were divided into three groups, i.e. untreated group and groups treated daily with SSD and papaya latex, respectively. A digital camera was used to take photographs of the burn wounds daily to monitor their healing. It was found that there was no significant difference in the healing time of papaya latex treated group compared to the SSD treated group. Papaya latex contained digestive enzymes which might clean burn wounds but might also cause wound bleeding in a few rats of the papaya latex group.

Matched MeSH terms: Carica
Fulltext Effects of different operating parameters in papaya halwa drying

Lau, F.F., Taip, F.S.

Pertanika Journal of Science & Technology, 2011;19(2):389-396.
MyJurnal

An experimental study was performed to determine the drying characteristics of dried papaya using different drying methods. They were dried using several methods, such as sun drying, solar drying, oven drying, and microwave drying. The effects of different operating conditions on physical quality attributes were investigated. The papaya were cut into different thicknesses and cooked in sugar syrup with different sugar concentration for 24 hours. Three different temperature settings were used in oven and microwave drying. The drying curve and drying rate of each method, temperature, sample
thickness and sugar concentration were studied. The drying times were found as in 6-15 minutes, 5 to 11 h, 10 to 18 h, and 14 to 23 h for the microwave, oven, sun and solar drying, respectively. The drying time increased with the increase of sample thickness and sugar concentration, as well as with the decrease of the drying temperature. In this study, quality attributes like colours and textural property of dried papaya were explored. Among the various methods of the drying characteristics
of papaya halwa, oven drying was preferred with the optimum sample in 5 mm thickness and at the air temperature of 70ºC as it saved up to 40% of the drying time as compared to other methods, except microwave, and produced acceptable physical quality of product.

Matched MeSH terms: Carica
Fulltext Biological control of Erwinia mallotivora, the causal agent of papaya dieback disease by indigenous seed-borne endophytic lactic acid bacteria consortium

Mohd Taha MD, Mohd Jaini MF, Saidi NB, Abdul Rahim R, Md Shah UK, Mohd Hashim A

PLoS One, 2019;14(12):e0224431.
PMID: 31841519 DOI: 10.1371/journal.pone.0224431

Dieback disease caused by Erwinia mallotivora is a major threat to papaya plantation in Malaysia. The current study was conducted to evaluate the potential of endophytic lactic acid bacteria (LAB) isolated from papaya seeds for disease suppression of papaya dieback. Two hundred and thirty isolates were screened against E. mallotivora BT-MARDI, and the inhibitory activity of the isolates against the pathogen was ranging from 11.7-23.7 mm inhibition zones. The synergistic experiments revealed that combination of W. cibaria PPKSD19 and Lactococcus lactis subsp. lactis PPSSD39 increased antibacterial activity against the pathogen. The antibacterial activity was partially due to the production of bacteriocin-like inhibitory substances (BLIS). The nursery experiment confirmed that the application of bacterial consortium W. cibaria PPKSD19 and L. lactis subsp. lactis PPSSD39 significantly reduced disease severity to 19% and increased biocontrol efficacy to 69% of infected papaya plants after 18 days of treatment. This study showed that W. cibaria PPKSD19 and L. lactis subsp. lactis PPSSD39 are potential candidate as biocontrol agents against papaya dieback disease.

Matched MeSH terms: Carica/drug effects*; Carica/metabolism
Fulltext Chemical Composition, Antioxidant and Cytoprotective Potentials of Carica papaya Leaf Extracts: A Comparison of Supercritical Fluid and Conventional Extraction Methods

Khor BK, Chear NJ, Azizi J, Khaw KY

Molecules, 2021 Mar 09;26(5).
PMID: 33803330 DOI: 10.3390/molecules26051489

The leaves of Carica papaya (CP) are rich in natural antioxidants. Carica papaya has traditionally been used to treat various ailments, including skin diseases. This study aims to decipher the antioxidant effects and phytochemical content of different CP leaf extracts (CPEs) obtained using supercritical carbon dioxide (scCO2) and conventional extraction methods. The antioxidant activities of CPEs were evaluated by cell-free (1,1-diphenyl-2-picryl-hydrazyl (DPPH) and ferric-reduced antioxidative power (FRAP)) and cell-based (H2O2) assay. Both C. papaya leaf scCO2 extract with 5% ethanol (CPSCE) and C. papaya leaf scCO2 extract (CPSC) exhibited stronger DPPH radical scavenging activity than conventional extracts. In the FRAP assay, two hydrophilic extracts (C. papaya leaf ethanol extract (CPEE) and C. papaya freeze-dried leaf juice (CPFD)) showed relatively stronger reducing power compared to lipophilic extracts. Cell-based assays showed that CPFD significantly protected skin fibroblasts from H2O2-induced oxidative stress in both pre-and post-treatment. CPEE protected skin fibroblasts from oxidative stress in a dose-dependent manner while CPSCE significantly triggered the fibroblast recovery after treatment with H2O2. GC-MS analysis indicated that CPSCE had the highest α-tocopherol and squalene contents. By contrast, both CP hydrophilic extracts (CPEE and CPFD) had a higher total phenolic content (TPC) and rutin content than the lipophilic extracts. Overall, CPEs extracted using green and conventional extraction methods showed antioxidative potential in both cell-based and cell-free assays due to their lipophilic and hydrophilic antioxidants, respectively.

Matched MeSH terms: Carica/metabolism; Carica/chemistry*
Characterisation of an alpha-galactosidase with potential relevance to ripening related texture changes

Soh CP, Ali ZM, Lazan H

Phytochemistry, 2006 Feb;67(3):242-54.
PMID: 16325871

alpha-Galactosidase (EC 3.2.1.22) from ripe papaya (Carica papaya L.) fruit was fractionated by a combination of ion exchange and gel filtration chromatography into three forms, viz., alpha-galactosidase 1, 2 and 3. The predominant isoform, alpha-gal 2, was probably a tetramer with a native molecular mass of about 170 kDa and 52 kDa-sized subunits and an estimated pI of 7.3. The subunit's N-terminal amino acid sequence shared high identity (97%) with the deduced sequence of a papaya cDNA clone encoding a putative alpha-galactosidase PAG2 as well as with an Ajuga reptans L. GGT1 clone encoding a galactan: galactan galactosyltransferase (66%). During ripening, alpha-galactosidase activity increased concomitantly with firmness loss and this increase was largely ascribed to alpha-gal 2. The protein level of alpha-gal 2 as estimated by immunoblot was low in developing fruits and generally increased with ripening. alpha-Galactosidase 2 also had the ability to markedly catalyse increased pectin solubility and depolymerisation while the polymers were still structurally attached to the cell walls mimicking, in part, the changes that occur during ripening. The close correlation between texture changes, alpha-gal 2 activity and protein levels as well as capability to modify intact cell walls suggest that the enzyme might contribute to papaya fruit softening during ripening. The purported mechanism of alpha-gal 2 action as a softening enzyme was discussed in terms of its functional capacity as a glycanase or perhaps, as a transglycosylase.

Matched MeSH terms: Carica/enzymology*; Carica/growth & development; Carica/chemistry
Fulltext Effect of edible coating of sago starch-gelatine incorporated with papaya seed extract on the storage stability of Malaysian fish sausage (keropok lekor)

Bakar, J., Abdul Kadir, N. S., Ahmad Mazlan, A. S., Ismail Fitry, M. R.

International Food Research Journal, 2020;27(4):618-624.
MyJurnal

The quality change of fish sausage (keropok lekor) coated in sago starch-gelatine coating with
papaya seed extract (PSE) during chill storage (7°C) was determined. During storage, pH,
thiobarbituric acid value (TBA), colour, moisture, and the total plate count were evaluated. pH
of samples significantly dropped (p < 0.05) during storage, and the highest decrease was in
control sample. The moisture content in control sample had an increasing trend while that of
samples with 5 and 7% PSE coatings significantly decreased, and only a slight change for
samples with 0% PSE coating. All samples had significant increase in their TBA values during
storage. The presence of the coating provided a positive effect on the colour of the fish sausages since no significant colour changes were observed during storage. TPC of control and
coated sausage in 0, 5, and 7% PSE exceeded the recommended microbial standard after 2, 6,
8, and 4 d of storage, respectively. Overall, coating with 5% of PSE was the most effective in
retarding the quality deterioration of the fish sausages.

Matched MeSH terms: Carica
Fulltext Malaysian Carica papaya L. var. Eksotika: Current Research Strategies Fronting Challenges

Sekeli R, Hamid MH, Razak RA, Wee CY, Ong-Abdullah J

Front Plant Sci, 2018;9:1380.
PMID: 30279695 DOI: 10.3389/fpls.2018.01380

Carica papaya L. or commonly known as papaya, is a major tropical crop consumed worldwide either as a vegetable or fresh fruit or processed products. In Malaysia, papaya was initially planted as a smallholder crop throughout the country. Eventually after 15 years of breeding and selection, a new variety, named C. papaya L. var. Eksotika, was released by the Malaysian Agricultural Research and Development Institute (MARDI) in 1987. This event changed the outlook of papaya planting from a smallholder crop to a plantation crop. Despite the blooming papaya business, the industry faced various disease issues that jeopardize its future. The most devastating was the papaya dieback disease, which affected approximately 800 hectares of plantation, destroyed approximately 1 million trees nationwide with total losses estimated at US$ 58 million. Even though Eksotika is a favored commercial variety with good eating and aesthetic quality fruit, its potential for more lucrative distant markets is tarnished with its short-shelf life fruits. Several strategies had been reported to address the challenges faced by Eksotika specifically against the dieback disease and the fruit's short shelf-life. This review focuses on C. papaya L. var. Eksotika particularly on the strategies to address the challenges faced in order to sustain the economic value of this crop plant, which had contributed significantly to the Malaysian economy.

Matched MeSH terms: Carica
Fulltext Studies on the physicochemical and sensory characteristics of goat's milk dadih incorporated with tropical-fruit purees

Chye, S.J., Ahmad, R., Noor Aziah, A.A.

International Food Research Journal, 2012;19(4):1387-1392.
MyJurnal

This study was carried out to improve the nutritional value of goat’s milk dadih by the addition of tropical-fruit purees, namely, jackfruit (Artocarpus heterophyllus, Lam.), pineapple (Ananas comosus) and papaya (Carica papaya). Dadih with added fruits were compared with the control (without fruit puree) for physical, chemical and sensory attributes. The texture properties of the tropical- fruit dadih were significantly different (p< 0.05) from the control. Control dadih showed highest values for lightness and hue (p< 0.05) as compared to tropical- fruit dadih. The addition of tropical- fruit purees significantly increased (p< 0.05) the moisture, protein, ash and vitamin C contents of the fruit added dadih. There were no significant differences (p> 0.05) in the fat, carbohydrate, energy and total soluble solid contents. Sensory evaluations using a hedonic test showed that all dadih were acceptable. Overall, syneresis of the dadih increased with decreasing pH throughout storage at 4°C.

Matched MeSH terms: Carica

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