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Comparative study of mycelia growth and sporophore yield of Auricularia polytricha (Mont.) Sacc on selected palm oil wastes as fruiting substrate

Abd Razak DL, Abdullah N, Khir Johari NM, Sabaratnam V

Appl Microbiol Biotechnol, 2013 Apr;97(7):3207-13.
PMID: 22576946 DOI: 10.1007/s00253-012-4135-8

The potential for using agricultural and industrial by-products as substrate for the production of the edible mushroom, Auricularia polytricha, was evaluated using several formulations of selected palm oil wastes mixed with sawdust and further supplemented with selected nitrogen sources. The best substrate formulations were sawdust (SD) mixed with oil palm frond (OPF; 90:10) added with 15% spent grain (SG) and sawdust mixed with empty fruit bunch (EFB; 50:50) added with 10% spent grain (SG) with mycelia growth rate of 8 mm/day and 7 mm/day respectively. These two substrate formulations were then subjected to different moisture content levels (65%, 75% and 85%). Highest total fresh sporophore yield at 0.43% was obtained on SD+OPF (90:10)+15% SG at 85% moisture content, followed closely by SD+EFB (50:50)+10% SG with 0.40% total yield, also at 85% moisture content. Each of the substrate formulations at 85% moisture content gave the highest biological efficiency (BE) at 288.9% and 260.7%, respectively. Both yield and biological efficiency of A. polytricha on these two formulations were almost three times higher when compared to sawdust substrate alone, thus proving the potential of these formulations to improve yield of this mushroom.
Fulltext Peripheral Nerve Regeneration Following Crush Injury to Rat Peroneal Nerve by Aqueous Extract of Medicinal Mushroom Hericium erinaceus (Bull.: Fr) Pers. (Aphyllophoromycetideae)

Wong KH, Naidu M, David P, Abdulla MA, Abdullah N, Kuppusamy UR, et al.

Evid Based Complement Alternat Med, 2011;2011:580752.
PMID: 21941586 DOI: 10.1093/ecam/neq062

Nerve crush injury is a well-established axonotmetic model in experimental regeneration studies to investigate the impact of various pharmacological treatments. Hericium erinaceus is a temperate mushroom but is now being cultivated in tropical Malaysia. In this study, we investigated the activity of aqueous extract of H. erinaceus fresh fruiting bodies in promoting functional recovery following an axonotmetic peroneal nerve injury in adult female Sprague-Dawley rats by daily oral administration. The aim was to investigate the possible use of this mushroom in the treatment of injured nerve. Functional recovery was assessed in behavioral experiment by walking track analysis. Peroneal functional index (PFI) was determined before surgery and after surgery as rats showed signs of recovery. Histological examinations were performed on peroneal nerve by immunofluorescence staining and neuromuscular junction by combined silver-cholinesterase stain. Analysis of PFI indicated that return of hind limb function occurred earlier in rats of aqueous extract or mecobalamin (positive control) group compared to negative control group. Regeneration of axons and reinnervation of motor endplates in extensor digitorum longus muscle in rats of aqueous extract or mecobalamin group developed better than in negative control group. These data suggest that daily oral administration of aqueous extract of H. erinaceus fresh fruiting bodies could promote the regeneration of injured rat peroneal nerve in the early stage of recovery.
Fulltext Nutritional Composition, Antioxidant Activities, and Antiulcer Potential of Lentinus squarrosulus (Mont.) Mycelia Extract

Mhd Omar NA, Abdullah N, Kuppusamy UR, Abdulla MA, Sabaratnam V

Evid Based Complement Alternat Med, 2011;2011:539356.
PMID: 21423634 DOI: 10.1155/2011/539356

Water extract of Lentinus squarrosulus mycelia was analysed for nutritional content, antioxidant capacity, and antiulcer ability. The extract contains high protein (57.6 g/100 g) and low total fat (0.5 g/100 g) and is rich in magnesium (0.4 g/100 g), potassium (3.8 g/100 g), vitamins B(1) (1.42 mg/100 g), and B(3) (194.29 mg/100 g) with total phenolic content of 39.16 mg/100 g. The cupric reducing antioxidant capacity and 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity of the extract were A(450) of 0.20 ± 0.03 at 0.5 mg/ml and IC(50) of 14.29 mg/ml, respectively. Oral feeding of L. squarrosulus extract (250 mg/kg) offered significant gastric mucosal protection of Sprague-Dawley rats compared to cimetidine (50 mg/kg). The ulcer healing rate of ulcerated rats after 24, 48, and 72 hours of treatment was 82%, 90%, and 100%, respectively. The IL-1β level in the serum and the NF-κB level in the tissues indicate that the healing potential was associated with attenuation of proinflammatory cytokines.
Fulltext Corrigendum to "Peripheral Nerve Regeneration Following Crush Injury to Rat Peroneal Nerve by Aqueous Extract of Medicinal Mushroom Hericium erinaceus (Bull.: Fr) Pers. (Aphyllophoromycetideae)"

Wong KH, Naidu M, David P, Abdulla MA, Abdullah N, Kuppusamy UR, et al.

Evid Based Complement Alternat Med, 2018;2018:9820769.
PMID: 30643540 DOI: 10.1155/2018/9820769

[This corrects the article DOI: 10.1093/ecam/neq062.].
Fulltext Effectiveness of canlite and probase stabilized laterite soil

Mohd Yunus, N. Z., Wei, N. T., Yung, Y. C., Marto, A., Pakir, F., Hezmi, M. A., et al.

Journal of Advanced Research Design, 2015;5(1):17-30.
MyJurnal

Besides traditional chemical stabilizers, polymer emulsion that is considered as a nontraditional
chemical stabilizer had been introduced recently. Among polymer emulsions, Canlite and
Probase have been widely used for soil stabilization. The aim of this paper is to investigate the
effectiveness of Laterite soil stabilization treated by Canlite-liquid and Probase-liquid soil stabilizers.
A testing program, scheduled to achieve the overall objectives of this study was conducted to
determine the basic properties of Laterite soil, establish the relationship between the compaction
characteristics (maximum dry density and optimum moisture content) with the amount of polymer
emulsion and last but not least to compare the strength of the Canlite-treated and Probase-treated
Laterite soil. The effects of both polymer soil stabilizers – Canlite and Probase – were examined. The
optimum moisture content of the mixtures was used as a reference to determine the water content for
the preparation of all the specimens and later used in the unconfined compressive strength (UCS) test.
The laboratory test results showed that the additional amount of Canlite and Probase have improved
the physical properties, liquid limit and unconfined compressive strength (UCS) of the Laterite soil.
The compressive strength of the treated Laterite was found varied and depends on the type of
stabilizers, quantity of additives and curing time. From the UCS tests, it was found that Probase
improves the strength of the Laterite more than Canlite.
Fulltext Preparation, antioxidant potential and angiotensin converting enzyme (ACE) inhibitory activity of gum arabic-stabilised magnesium orotate nanoparticles

Abdelkader Hassani, Siti Aslina Hussain?, Abdullah, N., Suryani Kamarudin, Rozita Rosli

International Food Research Journal, 2020;27(1):150-159.
MyJurnal

The present work investigated the antioxidant properties and antihypertensive activity of
magnesium orotate (MgOr) using various established in vitro assays, such as β-carotene
bleaching activity, 1,1-diphenyl-2-picrylhydrazyl (DPPH), and nitric oxide scavenging activity as well as angiotensin converting enzyme (ACE) inhibitory activity. Magnesium orotate
nanoparticles (MgOrGANPs) were prepared using the gum arabic (GA) as stabiliser coatings
for nanoparticles through freeze-drying method. The in vitro cytoxicity of MgOrGANPs
against human breast cancer MCF7, liver cancer HepG2, and colon cancer HT29 was investigated. The nitric oxide (NO) and DPPH scavenging assays of MgOrGANPs showed a
dose-dependent trend, while 500 and 200 µL/mL were significantly more effective than the
other concentrations with an IC50 of 89.56 µg/mL and 63.22% DPPH scavenging capacity
respectively. The exposure of human cancer cells to MgOrGANPs at 1.56 – 1,000 µg/mL
using 3-)4,5-dimethylthiazol-2-yl(2,5-diphenyl tetrazolium bromide (MTT) inhibited the
growth of cell lines examined in a dose-dependent manner. Hence, MgOrGANPs may have
great potential to be applied for cancer treatments.
Antioxidant Potential and Angiotensin-Converting Enzyme (ACE) Inhibitory Activity of Orotic Acid-Loaded Gum Arabic Nanoparticles

Hassani A, Hussain SA, Abdullah N, Kamarudin S, Rosli R

AAPS PharmSciTech, 2019 Jan 07;20(2):53.
PMID: 30617521 DOI: 10.1208/s12249-018-1238-2

Orotic acid (OA) nanoparticles were prepared using the freeze-drying method. The antihypertensive activity and antioxidant capacity of OA and orotic acid-loaded gum arabic nanoparticles (OAGANPs) were examined using the angiotensin-converting enzyme (ACE), 1,1-diphenyl-2-picrylhydrazyl (DPPH), nitric oxide (NO), and β-carotene assays, as well as the quantification of total phenolic content (TPC). The DPPH and NO scavenging activities of OAGANPs were significantly higher than those of the OA solution. The β-carotene bleaching assay of OAGANPs showed a dose-dependent trend, while 500 μg/ml was significantly more effective than the other concentrations, which exerted 63.4% of the antioxidant activity. The in vitro antihypertensive assay revealed that the OAGANPs exhibited the most potent ACE inhibition activity, when compared to the OA solution. Hence, results revealed the potential of preparing the OA as a nanoparticle formulation in enhancing the antioxidant and antihypertensive properties compared to the OA solution.
The Association Between Female Sexual Dysfunction and Sexual Dysfunction in the Male Partner: A Systematic Review and Meta-Analysis

Chew PY, Choy CL, Sidi HB, Abdullah N, Che Roos NA, Salleh Sahimi HM, et al.

J Sex Med, 2021 01;18(1):99-112.
PMID: 33303390 DOI: 10.1016/j.jsxm.2020.10.001

BACKGROUND: The field of study addressing the relationship between FSD and male sexual dysfunction (MSD) represents a pivotal worldwide health issue as interrelationship between FSD and MSD studies are still inconclusive.
AIM: To review the interrelationship between FSD and MSD and to conclude whether there is a definitive risk of men developing sexual dysfunction when his partner is suffering from FSD.
METHODS: The investigation was conducted following the standard practice for conducting and reporting the findings of systematic reviews and meta-analyses comprising of 4 electronic databases, that is, Embase, PsycInfo, Cochrane Library and Ovid (Medline) from inception to December 2019. Search strategies were developed based on relevant keywords with appropriate truncation and Boolean operators' approach. The quality of studies was employed using the McMaster Critical Review Form for Quantitative Studies and were assessed by independent reviewers. The levels of evidence of the included studies were also determined.
OUTCOMES: MSD who had been exposed to FSD.
RESULTS: From more than 8,000 studies searched, 26 studies were finally included, and most included studies have reasonable quality. Meta-analysis found a significant sexual dysfunction in men who are partnered with women with FSD. It found a consistent correlation between FDS and sexual dysfunction in men with a significant 3-fold increase in MSD who are partnered with women with FSD (odds ratio = 3.011, 95% confidence interval: 1.856-4.885, P =
A web-based educational intervention module to improve knowledge and attitudes towards thalassaemia prevention in Malaysian young adults

Ngim CF, Ibrahim H, Abdullah N, Lai NM, Tan RKM, Ng CS, et al.

Med J Malaysia, 2019 Jun;74(3):219-225.
PMID: 31256177

BACKGROUND: Thalassaemia is a public health burden in Malaysia and its prevention faces many challenges. In this study, we aimed to assess the effectiveness of a web-based educational module in improving knowledge and attitudes about thalassaemia prevention amongst Malaysian young adults.
METHODS: We designed an interactive web-based educational module in the Malay language wherein videos were combined with text and pictorial visual cues. Malaysians aged 18-40 years old who underwent the module had their knowledge and attitudes assessed at baseline, post-intervention and at 6-month follow-up using a selfadministered validated questionnaire.
RESULTS: Sixty-five participants: 47 Malays (72.3%), 15 Chinese (23.1%), three Indians (4.6%) underwent the module. Questionnaires were completed at baseline (n=65), postintervention (n=65) and at 6-month follow-up (n=60). Out of a total knowledge score of 21, significant changes were recorded across three time-points- median scores were 12 at pre-intervention, 19 at post-intervention and 16 at 6-month follow-up (p<0.001). Post-hoc testing comparing preintervention and 6-month follow-up scores showed significant retention of knowledge (p<0.001). Compared to baseline, attitudes at 6-month follow-up showed an increased acceptance for "marriage avoidance between carriers" (pre-intervention 20%, 6-month follow-up 48.3%, p<0.001) and "prenatal diagnosis" (pre-intervention 73.8%, 6-month follow-up 86.2%, p=0.008). Acceptance for selective termination however, remained low without significant change (pre-intervention 6.2%, 6-month follow-up 16.7%, p=0.109).
CONCLUSION: A web-based educational module appears effective in improving knowledge and attitudes towards thalassaemia prevention and its incorporation in thalassaemia prevention programs is potentially useful in Malaysia and countries with a high internet penetration rate.
Fulltext A Review of Malaysian Medicinal Plants with Potential Anti-Inflammatory Activity

Abu Bakar FI, Abu Bakar MF, Abdullah N, Endrini S, Rahmat A

Adv Pharmacol Sci, 2018;2018:8603602.
PMID: 30123256 DOI: 10.1155/2018/8603602

This article aims to provide detailed information on Malaysian plants used for treating inflammation. An extensive search on electronic databases including PubMed, Google Scholar, Scopus, and ScienceDirect and conference papers was done to find relevant articles on anti-inflammatory activity of Malaysian medicinal plants. The keyword search terms used were "inflammation," "Malaysia," "medicinal plants," "mechanisms," "in vitro," and "in vivo." As a result, 96 articles on anti-inflammatory activity of Malaysian medicinal plants were found and further reviewed. Forty-six (46) plants (in vitro) and 30 plants (in vivo) have been identified to possess anti-inflammatory activity where two plants, Melicope ptelefolia (Tenggek burung) and Portulaca oleracea (Gelang pasir), were reported to have the strongest anti-inflammatory activity of more than 90% at a concentration of 250 µg/ml. It was showed that the activity was mainly due to the occurrence of diverse naturally occurring phytochemicals from diverse groups such as flavonoids, coumarins, alkaloids, steroids, benzophenone, triterpenoids, curcuminoids, and cinnamic acid. Hence, this current review is a detailed discussion on the potential of Malaysian medicinal plants as an anti-inflammatory agent from the previous studies. However, further investigation on the possible underlying mechanisms and isolation of active compounds still remains to be investigated.
Fulltext Pulmonary rehabilitation capacity building through a teach-the-teacher programme: A Malaysian experience

Chan SC, Beh HC, Jeevajothi Nathan J, Sahadeevan Y, Patrick Engkasan J, Chuah SY, et al.

J Glob Health, 2023 Aug 11;13:03047.
PMID: 37563918 DOI: 10.7189/jogh.13.03047
Fulltext Determinants of comorbidity in rheumatoid arthritis: influence of demographic and duration of illness

Chin SN, Abdullah N, Poh LP

Journal of Advanced Research Design, 2015;22(1):13-22.
MyJurnal

Rheumatoid arthritis (RA) is a chronic, disabling autoimmune disease which affects about 5 in 1000 people in Malaysia. Patients with RA are at increased risk of developing comorbid conditions. This research aims at determining these relationships between demographic, duration of illness and comorbidity in RA via a multiple binary logistic (MBL) regression analysis based on the 102 patients’ information (23 males; 79 females) obtained from the rheumatoid clinic of the Queen Elizabeth Hospital in Kota Kinabalu. The relationship of the RA patients with comorbid conditions was studied with focus on the demographic and duration of illness. The variables obtained for analysis were the comorbid conditions namely, hypertension and hyperlipidemia, age, duration of illness, gender, ethnicity, household income and education level. From six independent variables, two were quantitative would be analyzed, while four were categorical, and would be transformed into dummy variables. Four phases in a model-building approach were executed where two models were formed where Model I predicted the probability of occurrence of hypertension with age of patients and first order interaction between duration of illness before diagnosis and household income of less than RM1000 had positive effects on the model, while Model II predicted the occurrence of hyperlipidemia among the RA patients with age of patients and first order interaction variable between gender(female) and age were the contributing factors.
Study site: Rheumatoid clinic, Queen Elizabeth Hospital (QEH), Kota Kinabalu, Sabah, Malaysia
A 53-Year Bibliometric and Scientometric Analysis of Research in Culinary and Medicinal Mushrooms

Chan XH, Sabaratnam V, Abdullah N, Phan CW

Int J Med Mushrooms, 2020;22(6):521-534.
PMID: 32865894 DOI: 10.1615/IntJMedMushrooms.2020035031

The research field of culinary and medicinal mushrooms has been well developed since the first relevant publication in 1966. However, to date, there has been no bibliometric analysis published specifically for this field. This study aimed to assess the most influential publications as well as the research trends and important drivers in the field of culinary and medicinal mushrooms. Scopus was used to identify relevant publications and the 1000 most-cited publications were identified and analyzed. Bradford's law of scattering shows one-third of the papers were published in 14 core journals, with a total of 102 papers published in International Journal of Medicinal Mushrooms. There is an insignificant negative correlation (Pearson's correlation coefficient, r = -0.355) between the journal impact factor and publication count. VOSviewer was used to generate a country network. China represents Asia's research center in this field, having contributed 20% of the 1000 most-cited publications. A term map was also created to visualize the co-occurrence of key terms in the domain. Different biological activities such as antioxidant and antitumor properties of mushrooms appeared to be a recurring topic in this field. Wasser (2003) showed the highest citation count (n = 1282), which is almost double the second most-cited publication (n = 611). There is a weak positive correlation (r = +0.237) between the years since publication and total citation count. In conclusion, this bibliometric study will assist researchers to comprehend the current status of the research on culinary and medicinal mushrooms, and to visualize the future impact of such an important field.
Intraoral appliances for in situ oral biofilm growth: a systematic review

Abdullah N, Al-Marzooq F, Mohamad S, Abd Rahman N, Chi Ngo H, Perera Samaranayake L

J Oral Microbiol, 2019;11(1):1647757.
PMID: 31489127 DOI: 10.1080/20002297.2019.1647757

Background: Oral biofilms are the root cause of major oral diseases. As in vitro biofilms are not representative of the intraoral milieu, various devices have been manufactured over the years to develop Appliance Grown Oral Biofilm (AGOB). Objective: To review various intraoral appliances used to develop AGOB for microbiological analysis, and to judge the optimal means for such analyses. Design: Four databases (PubMed, Science Direct, Scopus and Medline) were searched by two independent reviewers, and articles featuring the key words 'device' OR 'splint' OR 'appliance'; 'Oral biofilm' OR 'dental plaque'; 'in vivo' OR 'in situ'; 'Microbiology' OR 'Bacteria' OR 'microbiome'; were included. The standard Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) were adopted for data gathering. Results: Of the 517 articles which met the initial inclusion criteria, 24 were deemed eligible for review. The age of the AGOB, sampled at various intervals, ranged from 30 min to 28 days. The most commonly used microbiome analytical methods were fluorescence microscopy, total cell count using conventional, and molecular tools including Next Generation Sequencing (NGS) platforms. Conclusions: No uniformly superior method for collecting AGOB could be discerned. NGS platforms are preferable for AGOB analyses.
Aspiration of breast abscess under ultrasound guidance: outcome obtained and factors affecting success

Elagili F, Abdullah N, Fong L, Pei T

Asian J Surg, 2007 Jan;30(1):40-4.
PMID: 17337370

To assess ultrasonographically (US) guided needle aspiration of breast abscesses as an alternative to surgical incision and drainage.
Survey of fungal counts and natural occurrence of aflatoxins in Malaysian starch-based foods

Abdullah N, Nawawi A, Othman I

Mycopathologia, 1998;143(1):53-8.
PMID: 10205885

In a survey of starch-based foods sampled from retail outlets in Malaysia, fungal colonies were mostly detected in wheat flour (100%), followed by rice flour (74%), glutinous rice grains (72%), ordinary rice grains (60%), glutinous rice flour (48%) and corn flour (26%). All positive samples of ordinary rice and glutinous rice grains had total fungal counts below 10(3) cfu/g sample, while among the positive rice flour, glutinous rice flour and corn flour samples, the highest total fungal count was more than 10(3) but less than 10(4) cfu/g sample respectively. However, in wheat flour samples total fungal count ranged from 10(2) cfu/g sample to slightly more than 10(4) cfu/g sample. Aflatoxigenic colonies were mostly detected in wheat flour (20%), followed by ordinary rice grains (4%), glutinous rice grains (4%) and glutinous rice flour (2%). No aflatoxigenic colonies were isolated from rice flour and corn flour samples. Screening of aflatoxin B1, aflatoxin B2, aflatoxin G1 and aflatoxin G2 using reversed-phase HPLC were carried out on 84 samples of ordinary rice grains and 83 samples of wheat flour. Two point four percent (2.4%) of ordinary rice grains were positive for aflatoxin G1 and 3.6% were positive for aflatoxin G2. All the positive samples were collected from private homes at concentrations ranging from 3.69-77.50 micrograms/kg. One point two percent (1.2%) of wheat flour samples were positive for aflatoxin B1 at a concentration of 25.62 micrograms/kg, 4.8% were positive for aflatoxin B2 at concentrations ranging from 11.25-252.50 micrograms/kg, 3.6% were positive for aflatoxin G1 at concentrations ranging from 25.00-289.38 micrograms/kg and 13.25% were positive for aflatoxin G2 at concentrations ranging from 16.25-436.25 micrograms/kg. Similarly, positive wheat flour samples were mostly collected from private homes.
Fulltext Characteristics and clinical predictors of minor head injury in children presenting to two Malaysian accident and emergency departments

Chan HC, Aasim WA, Abdullah NM, Naing NN, Abdullah JM, Saffari MH, et al.

Singapore Med J, 2005 May;46(5):219-23.
PMID: 15858690

Paediatric minor head injuries (MHI) are just as common in both bigger and smaller towns in Malaysia. Urban-based MHI are due more to motor vehicular injuries compared to rural-based MHI which are mainly due to non-motor vehicular injuries. The main objectives of this study were to compare incidence of admitted patients to accident and emergency departments of hospitals in two different settings in Malaysia, namely: Ipoh (urban-based) and Kota Bharu (rural-based); and to correlate to demographical characteristics, types of accident, clinical signs and symptoms, radiological and computed tomography (CT) findings, management; and finally, to determine clinical predictors of intracranial injury in MHI.
Fulltext Palm kernel cake extract exerts hepatoprotective activity in heat-induced oxidative stress in chicken hepatocytes

Oskoueian E, Abdullah N, Idrus Z, Ebrahimi M, Goh YM, Shakeri M, et al.

BMC Complement Altern Med, 2014;14:368.
PMID: 25273634 DOI: 10.1186/1472-6882-14-368

Palm kernel cake (PKC), the most abundant by-product of oil palm industry is believed to contain bioactive compounds with hepatoprotective potential. These compounds may serve as hepatoprotective agents which could help the poultry industry to alleviate adverse effects of heat stress on liver function in chickens.
Fulltext Effects of flavonoids on rumen fermentation activity, methane production, and microbial population

Oskoueian E, Abdullah N, Oskoueian A

Biomed Res Int, 2013;2013:349129.
PMID: 24175289 DOI: 10.1155/2013/349129

This research was carried out to evaluate the effects of flavone, myricetin, naringin, catechin, rutin, quercetin, and kaempferol at the concentration of 4.5% of the substrate (dry matter basis) on the rumen microbial activity in vitro. Mixture of guinea grass and concentrate (60 : 40) was used as the substrate. The results showed that all the flavonoids except naringin and quercetin significantly (P < 0.05) decreased the dry matter degradability. The gas production significantly (P < 0.05) decreased by flavone, myricetin, and kaempferol, whereas naringin, rutin, and quercetin significantly (P < 0.05) increased the gas production. The flavonoids suppressed methane production significantly (P < 0.05). The total VFA concentration significantly (P < 0.05) decreased in the presence of flavone, myricetin, and kaempferol. All flavonoids except naringin and quercetin significantly (P < 0.05) reduced the carboxymethyl cellulase, filter paperase, xylanase, and β -glucosidase activities, purine content, and the efficiency of microbial protein synthesis. Flavone, myricetin, catechin, rutin, and kaempferol significantly (P < 0.05) reduced the population of rumen microbes. Total populations of protozoa and methanogens were significantly (P < 0.05) suppressed by naringin and quercetin. The results of this research demonstrated that naringin and quercetin at the concentration of 4.5% of the substrate (dry matter basis) were potential metabolites to suppress methane production without any negative effects on rumen microbial fermentation.
Antioxidant capacity of fresh and processed fruit bodies and mycelium of Auricularia auricula-judae (Fr.) Quél

Kho YS, Vikineswary S, Abdullah N, Kuppusamy UR, Oh HI

J Med Food, 2009 Feb;12(1):167-74.
PMID: 19298211 DOI: 10.1089/jmf.2007.0568

Auricularia auricula-judae is currently grown in Malaysia. In the present study, the methanolic extracts from fruit bodies (fresh, oven-dried, and freeze-dried) and mycelium of A. auricula-judae were evaluated for their antioxidant capacities based on 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity and ferric reducing antioxidant power (FRAP) assay. The total phenolic content in the extracts were also measured. The extract of freeze-dried fruit bodies of A. auricula-judae had potent DPPH free radical scavenging activity with a 50% effective concentration of 2.87 mg/mL, whereas the FRAP value of A. auricula-judae mycelium was 5.22 micromol of FeSO(4).7H(2)O equivalents/g of mycelium sample. Further, a positive correlation (R(2) = 0.7668) between FRAP level of A. auricula-judae extracts and the total phenolic contents was observed. Thus the method of processing of fresh fruit bodies had an effect on the antioxidant potential of A. auricula-judae.

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