Displaying publications 101 - 120 of 1133 in total

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  1. Removal of chromium (VI) from aqueous solution using treated oil palm fibre
    Isa MH, Ibrahim N, Aziz HA, Adlan MN, Sabiani NH, Zinatizadeh AA, et al.
    J Hazard Mater, 2008 Apr 1;152(2):662-8.
    PMID: 17714862
    This study proposed an oil palm by-product as a low-cost adsorbent for the removal of hexavalent chromium [Cr (VI)] from aqueous solution. Adsorption of Cr (VI) by sulphuric acid and heat-treated oil palm fibre was conducted using batch tests. The influence of pH, contact time, initial chromium concentration and adsorbent dosage on the removal of Cr (VI) from the solutions was investigated. The optimum initial pH for maximum uptake of Cr (VI) from aqueous solution was found to be 1.5. The removal efficiency was found to correlate with the initial Cr (VI) concentration, adsorbent dosage as well as the contact time between Cr (VI) and the adsorbent. The adsorption kinetics tested with pseudo first order and pseudo second order models yielded high R(2) values from 0.9254 to 0.9870 and from 0.9936 to 0.9998, respectively. The analysis of variance (ANOVA) showed significant difference between the R(2) values of the two models at 99% confidence level. The Freundlich isotherm (R(2)=0.8778) described Cr (VI) adsorption slightly better than the Langmuir isotherm (R(2)=0.8715). Difficulty in desorption of Cr (VI) suggests the suitability of treated oil palm fibre as a single-use adsorbent for Cr (VI) removal from aqueous solution.
    Matched MeSH terms: Plant Oils*
  2. Runoff characteristics and application of HEC-HMS for modelling stormflow hydrograph in an oil palm catchment
    Yusop Z, Chan CH, Katimon A
    Water Sci Technol, 2007;56(8):41-8.
    PMID: 17978431
    Rainfall-runoff processes in a small oil palm catchment (8.2 ha) in Johor, Malaysia were examined. Storm hydrographs show rapid responses to rainfall with a short time to peak. The estimated initial hydrologic loss for the oil palm catchment is 5 mm. Despite the low initial loss, the catchment exhibits a high proportion of baseflow, approximately 54% of the total runoff. On an event basis, the stormflow response factor and runoff coefficient ranges from 0.003 to 0.21, and 0.02 to 0.44, respectively. Peakflow and stormflow volume were moderately correlated with rainfall. The hydrographs were satisfactorily modelled using the Hydrologic Engineering Centre-Hydrologic Modelling System (HEC-HMS). The efficiency indexes of the calibration and validation exercises are 0.81 and 0.82, respectively. Based on these preliminary findings, it could be suggested that an oil palm plantation would be able to serve reasonably well in regulating basic hydrological functions.
    Matched MeSH terms: Plant Oils*
  3. Evaluation of shear strength of oil treated laminated bamboo
    Sulaiman O, Hashim R, Wahab R, Ismail ZA, Samsi HW, Mohamed A
    Bioresour Technol, 2006 Dec;97(18):2466-9.
    PMID: 16524726
    Studies were carried out on heat treatment of bamboo species Gigantochloa scortechinii Gamble using palm oil. The samples were laminated and glued. The adhesion results showed that the delamination of glue line increased as the temperature and duration of oil heat treatment increased. Maximum load and shear strength of the glue line reduced as the heat treatment become more severe. It was found that the palm oil used as the heating medium penetrated in some parts of the cell wall as well as in the cell lumen of the bamboo.
    Matched MeSH terms: Plant Oils/pharmacology*
  4. Fulltext Improved Method for the Qualitative Analyses of Palm Oil Carotenes Using UPLC
    Ng MH, Choo YM
    J Chromatogr Sci, 2016 Apr;54(4):633-8.
    PMID: 26941414 DOI: 10.1093/chromsci/bmv241
    Palm oil is the richest source of natural carotenes, comprising 500-700 ppm in crude palm oil (CPO). Its concentration is found to be much higher in oil extracted from palm-pressed fiber, a by-product from the milling of oil palm fruits. There are 11 types of carotenes in palm oil, excluding the cis/trans isomers of some of the carotenes. Qualitative separation of these individual carotenes is particularly useful for the identification and confirmation of different types of oil as the carotenes profile is unique to each type of vegetable oil. Previous studies on HPLC separation of the individual palm carotenes reported a total analyses time of up to 100 min using C30 stationary phase. In this study, the separation was completed in <5 min. The qualitative separation was successfully carried out using a commonly used stationary phase, C18.
    Matched MeSH terms: Plant Oils/chemistry*
  5. Updates on baseline characteristics of the omega-3 fatty acids (Fish oils) and Aspirin in Vascular access OUtcomes in REnal Disease (FAVOURED) study
    Viecelli AK, Pascoe EM, Polkinghorne KR, Hawley CM, Paul-Brent PA, Badve SV, et al.
    Nephrology (Carlton), 2017 10;22(10):823-824.
    PMID: 27188542 DOI: 10.1111/nep.12823
    Matched MeSH terms: Fish Oils*
  6. Adsorption of Bovine Serum Albumin (BSA) at the Oil/Water Interface: A Neutron Reflection Study
    Campana M, Hosking SL, Petkov JT, Tucker IM, Webster JR, Zarbakhsh A, et al.
    Langmuir, 2015 May 26;31(20):5614-22.
    PMID: 25875917 DOI: 10.1021/acs.langmuir.5b00646
    The structure of the adsorbed protein layer at the oil/water interface is essential to the understanding of the role of proteins in emulsion stabilization, and it is important to glean the mechanistic events of protein adsorption at such buried interfaces. This article reports on a novel experimental methodology for probing protein adsorption at the buried oil/water interface. Neutron reflectivity was used with a carefully selected set of isotopic contrasts to study the adsorption of bovine serum albumin (BSA) at the hexadecane/water interface, and the results were compared to those for the air/water interface. The adsorption isotherm was determined at the isoelectric point, and the results showed that a higher degree of adsorption could be achieved at the more hydrophobic interface. The adsorbed BSA molecules formed a monolayer on the aqueous side of the interface. The molecules in this layer were partially denatured by the presence of oil, and once released from the spatial constraint by the globular framework they were free to establish more favorable interactions with the hydrophobic medium. Thus, a loose layer extending toward the oil phase was clearly observed, resulting in an overall broader interface. By analogy to the air/water interface, as the concentration of BSA increased to 1.0 mg mL(-1) a secondary layer extending toward the aqueous phase was observed, possibly resulting from the steric repulsion upon the saturation of the primary monolayer. Results clearly indicate a more compact arrangement of molecules at the oil/water interface: this must be caused by the loss of the globular structure as a consequence of the denaturing action of the hexadecane.
    Matched MeSH terms: Oils/chemistry*
  7. Comparative differential scanning calorimetric analysis of vegetable oils: II. Effects of cooling rate variation
    Che Man YB, Tan CP
    Phytochem Anal, 2002 May-Jun;13(3):142-51.
    PMID: 12099104
    The effects of scanning rates (1, 5, 10 and 20 degrees C/min) on the DSC cooling profiles of 11 vegetable oils have been determined in order to monitor peak transition temperatures, onset temperatures and crystallisation enthalpies. Triacylglycerol (TAG) profiles and iodine value analyses were used to complement the DSC data. The melted samples exhibited complicated crystallising exotherms. As the cooling rate increased, the crystallisation temperature decreased and the breadth of the crystallisation exotherm on cooling from the melt increased. In addition, the intensity of the exothermic peak increased somewhat when the cooling rate was increased. At slow cooling rates, TAG had more time to interact. It is conceivable that, at a low cooling rate (1 degree C/min), a prominent exotherm would be observed on crystallisation of vegetable oils and fats. The occurrence of one exotherm upon cooling indicated the co-crystallisation of the TAG upon slow cooling. On the basis of the corollary results obtained, vegetable oils may be differentiated by their onset temperature (Ton) values in the DSC cooling curves. Generally, there was a shift of Ton toward lower values with increasing cooling rates.
    Matched MeSH terms: Plant Oils/chemistry*
  8. Determination of shell content in palm kernel cake
    Siew WL
    J AOAC Int, 1996 1 1;79(1):80-2.
    PMID: 8620115
    A method for determining shell in palm kernel cake (PKC) is described. This simple and rapid method requires little pretreatment compared with the method currently used in PKC trade, in which the sample undergoes defatting, acid and alkali digestion, and washing, before a chloroform-alcohol solution is used to separate the shells. In the proposed method, only defatting the sample is required. The shells are separated by the density difference between the shell and PKC in a potassium iodide solution. Recoveries of at least 93% were obtained, and the correlation coefficient between the actual shell content and the determined shell content was 0.999, with gradients of 0.97 and 0.98 for fine and coarse shell, respectively.
    Matched MeSH terms: Plant Oils*
  9. Hexane-extracted spent bleaching earth as a sorbent for copper in aqueous solution
    Low KS, Lee CK, Lee TS
    Bull Environ Contam Toxicol, 1996 Mar;56(3):405-12.
    PMID: 8825962
    Matched MeSH terms: Plant Oils/metabolism
  10. Fulltext Effects of palm oil on cardiovascular risk
    Chong YH, Ng TKW
    Med J Malaysia, 1991 Mar;46(1):41-50.
    PMID: 1836037
    A major public health concern of affluent nations is the excessive consumption of dietary fats which are now closely linked to coronary heart disease. Against this scenario, the tropical oils and palm oil in particular, have been cast as major villains in the U.S.A., despite the fact that palm oil consumption there is negligible. The unsuspecting public may not realise that the call to avoid palm oil is nothing more than a trade ploy since in recent years palm oil has been very competitive and has gained a major share of the world's edible oils and fats market. Many also lose sight of the fact that, palm oil, like other edible oils and fats, is an important component of the diet. The allegation that palm oil consumption leads to raised blood cholesterol levels and is therefore atherogenic is without scientific foundation. Examination of the chemical and fatty acid composition of palm oil or its liquid fraction should convince most nutritionists that the oil has little cholesterol-raising potential. The rationale for these are: it is considered cholesterol free. its major saturated fatty acid, palmitic acid (16:0) has recently been shown to be neutral in its cholesterolaemic effect, particularly in situations where the LDL receptors have not been down-regulated by dietary means or through a genetic effect. palm oil contains negligible amounts (less than 1.5%) of the hypercholesterolemic saturated fatty acids, namely lauric acid (12:0) and myristic acid (14:0). it has moderately rich amounts of the hypocholesterolaemic, monounsaturated oleic acid (18:1, omega-9) and adequate amounts of linoleic acid. (18:2, omega-6). It contains minor components such as the vitamin E tocotrienols which are not only powerful antioxidants but are also natural inhibitors of cholesterol synthesis. Feeding experiments in various animal species and humans also do not support the allegation that palm oil is atherogenic. On the contrary, palm oil consumption reduces blood cholesterol in comparison with the traditional sources of saturated fats such as coconut oil, dairy and animal fats. In addition, palm oil consumption may raise HDL levels and reduce platelet aggregability. As with all nutrients, there is a need to obtain a balance of different fatty acids found in fats in edible oils and other food sources. There is no single ideal source of fat that answers to the recent American Heart Association's call to reflect a 1:1:1 ratio of saturated, monounsaturated and polyunsaturated fats in relation to the recommended dietary fat intake of 30% of calories or less.(ABSTRACT TRUNCATED AT 400 WORDS)
    Matched MeSH terms: Plant Oils/pharmacology*
  11. The fatty acid composition of cooking oils and fats used in Malaya
    Chong YH, Mills GL
    Med J Malaya, 1966 Dec;21(2):125-7.
    PMID: 4227381
    Matched MeSH terms: Oils/analysis*
  12. Fulltext Dataset on applying HPMC polymer to improve encapsulation efficiency and stability of the fish oil: In vitro evaluation
    Zaidul ISM, Fahim TK, Sahena F, Azad AK, Rashid MA, Hossain MS
    Data Brief, 2020 Oct;32:106111.
    PMID: 32904423 DOI: 10.1016/j.dib.2020.106111
    Data examines the effect of hydroxypropyl methylcellulose (HPMC) HPMC15 cP, and HPMC 5 cP polymer composition on the physicochemical traits of encapsulated oil made using lab scale spray drying (180 °C). The data found showed that the properties of the reconstituted fish oil powder are significantly affected by the polymer's composition and ratio (p < 0.05). In this experiment, powder with the particle sizes below 60 μm was produced and it was observed that HPMC is a good emulsifier for all formulations and the encapsulation efficiency is high with 75.21% for AF1 formulation. It was also observed that the process of fish oil encapsulation employed by HPMC 5 cP produce a more volatile oil powder, while encapsulation with HPMC 15 cP produced a more stable fish oil powder. These finding shows that the utilisation of HPMC as a polymer to encapsulate fish oil can produce a more efficient and stable compound.
    Matched MeSH terms: Fish Oils; Oils, Volatile
  13. A practical approach for synthesis of biodiesel via non-edible seeds oils using trimetallic based montmorillonite nano-catalyst
    Munir M, Ahmad M, Mubashir M, Asif S, Waseem A, Mukhtar A, et al.
    Bioresour Technol, 2021 May;328:124859.
    PMID: 33621759 DOI: 10.1016/j.biortech.2021.124859
    The potential of new trimetallic (Ce, Cu, La) loaded montmorillonite clay catalyst for synthesizing biodiesel using novel non-edible Celastrus paniculatus Willd seed oil via two-step transesterification reaction has been reported along with catalyst characterization. Transesterification reaction was optimized and maximum biodiesel yield of 89.42% achieved under optimal operating reaction states like; 1:12 oil to methanol ratio, 3.5% of catalyst amount, 120 °C of reaction temperature for 3 h. The predicted and experimental biodiesel yields under these reaction conditions were 89.42 and 89.40%, which showing less than 0.05% variation. Additionally, optimum biodiesel yield can be predicted by drawing 3D surface plots and 2D contour plots using MINITAB 17 software. For the characterization of the obtained biodiesel, analysis including the GC/MS, FT-IR, 1H NMR and 13C NMR were applied. The fuel properties of obtained biodiesel agrees well with the different European Union (EU-14214), China (GB/T 20828), and American (ASTM-951, 6751) standards.
    Matched MeSH terms: Plant Oils/analysis
  14. Ecotoxicological assessment of palm oil mill effluent final discharge by zebrafish (Danio rerio) embryonic assay
    Hashiguchi Y, Zakaria MR, Toshinari M, Mohd Yusoff MZ, Shirai Y, Hassan MA
    Environ Pollut, 2021 May 15;277:116780.
    PMID: 33640825 DOI: 10.1016/j.envpol.2021.116780
    Most palm oil mills adopted conventional ponding system, including anaerobic, aerobic, facultative and algae ponds, for the treatment of palm oil mill effluent (POME). Only a few mills installed a bio-polishing plant to treat POME further before its final discharge. The present study aims to determine the quality and toxicity levels of POME final discharge from three different mills by using conventional chemical analyses and fish (Danio rerio) embryo toxicity (FET) test. The effluent derived from mill A which installed with a bio-polishing plant had lower values of BOD, COD and TSS at 45 mg/L, 104 mg/L, and 27 mg/L, respectively. Only mill A nearly met the industrial effluent discharge standard for BOD. In FET test, effluent from mill A recorded low lethality and most of the embryos were malformed after hatching (half-maximal effective concentration (EC50) = 20%). The highest toxicity was observed from the effluent of mill B and all embryos were coagulated after 24 h in samples greater than 75% of effluent (38% of half-maximal lethal concentration (LC50) at 96 h). The embryos in the effluent from mill C recorded high mortality after hatching, and the survivors were malformed after 96 h exposure (LC50 = 26%). Elemental analysis of POME final discharge samples showed Cu, Zn, and Fe concentrations were in the range of 0.10-0.32 mg/L, 0.01-0.99 mg/L, and 0.94-4.54 mg/L, respectively and all values were below the effluent permissible discharge limits. However, the present study found these metals inhibited D. rerio embryonic development at 0.12 mg/L of Cu, and 4.9 mg/L of Fe for 96 h-EC50. The present study found that bio-polishing plant installed in mill A effectively removing pollutants especially BOD and the FET test was a useful method to monitor quality and toxicity of the POME final discharge samples.
    Matched MeSH terms: Plant Oils/toxicity
  15. Fulltext Research Trends of Biodegradation of Cooking Oil in Antarctica from 2001 to 2021: A Bibliometric Analysis Based on the Scopus Database
    Zahri KNM, Zulkharnain A, Sabri S, Gomez-Fuentes C, Ahmad SA
    Int J Environ Res Public Health, 2021 02 19;18(4).
    PMID: 33669826 DOI: 10.3390/ijerph18042050
    In the present age, environmental pollution is multiplying due to various anthropogenic activities. Pollution from waste cooking oil is one of the main issues facing the current human population. Scientists and researchers are seriously concerned about the oils released from various activities, including the blockage of the urban drainage system and odor issues. In addition, cooking oil is known to be harmful and may have a carcinogenic effect. It was found that current research studies and publications are growing on these topics due to environmental problems. A bibliometric analysis of studies published from 2001 to 2021 on cooking oil degradation was carried out using the Scopus database. Primarily, this analysis identified the reliability of the topic for the present-day and explored the past and present progresses of publications on various aspects, including the contributing countries, journals and keywords co-occurrence. The links and interactions between the selected subjects (journals and keywords) were further visualised using the VOSviewer software. The analysis showed that the productivity of the publications is still developing, with the most contributing country being the United States, followed by China and India with 635, 359 and 320 publications, respectively. From a total of 1915 publications, 85 publications were published in the Journal of Agricultural and Food Chemistry. Meanwhile, the second and third of the most influential journals were Bioresource Technology and Industrial Crops and Products with 76 and 70 total publications, respectively. Most importantly, the co-occurrence of the author's keywords revealed "biodegradation", "bioremediation", "vegetable oil" and "Antarctic" as the popular topics in this study area, especially from 2011 to 2015. In conclusion, this bibliometric analysis on the degradation of cooking oil may serve as guide for future avenues of research in this area of research.
    Matched MeSH terms: Oils*
  16. Nursing aromatherapy using lavender with rose essence oil for post-surgery pain management
    Surya M, Zuriati Z, Zahlimar, Poddar S
    Enferm Clin, 2020 06;30 Suppl 5:171-174.
    PMID: 32713562 DOI: 10.1016/j.enfcli.2020.02.001
    OBJECTIVE: Pain management is one of the methods used in the health sector. Nursing care focuses on non-pharmacological measures, including the provision of aromatherapy using lavender and rose aromatherapy, which aims to understand the effectiveness of lavender and rose aromatherapy on pain intensity of postoperative patients in Laparatomi Hospital in Aisyiyah General Hospital in the surgical inpatient room, Padang in 2019.

    METHOD: The design of this study is a Quasi Experiment with pre-test and post-test designs with two groups. The sample of this study was Post Laparatomi in RSU with the technique of Accidental Sampling. The sample of this study consisted of 30 people for lavender and rose aromatherapy. Statistical tests used the Independent Test T-test.

    RESULT: Based on the results of the study it was found that lavender and rose aromatherapy can reduce pain scale in postoperative patients. But compared to the two intervention groups, the aroma group of lavender therapy is more effective with mean pain scale before lavender aromatherapy being 5.20 and pre-test is 3.40 with p-value 0.000.

    CONCLUSION: The nurses could provide nursing care in dealing with pain management in postoperative patients in addition to deep breathing techniques. It is recommended to apply aroma lavender therapy, which reduces pain and makes patients more relaxed.

    Matched MeSH terms: Plant Oils/therapeutic use
  17. Integrated Anaerobic/Oxic/Oxic treatment for high strength palm oil mill effluent
    Show KY, Lo EKV, Wong WS, Lee JY, Yan Y, Lee DJ
    Bioresour Technol, 2021 Oct;338:125509.
    PMID: 34271500 DOI: 10.1016/j.biortech.2021.125509
    Safe disposal of effluent from palm oil production poses an environmental concern. The highly polluting effluent is customarily treated by unsustainable open ponds with low efficiency, direct emissions, and massive land use. This study looks into an application of integrated anaerobic/oxic/oxic scheme for treatment of high strength palm oil mill effluent. The anaerobic reactors functioned as a prime degrader that removed up to 97.5% of the chemical oxygen demand (COD), while the aerobic reactors played a role of an effluent polisher that further reduced the COD. Their complementing roles resulted in a remarkable removal of 99.7%. Assessment of emission mitigation and biogas energy revealed that yearly energy of 53.2 TJ, emissions reduction of 239,237 tCO2 and revenue of USD 1.40 millions can be generated out of electricity generation and heating. The integrated scheme provides a viable and sustainable treatment of the high strength palm oil mill effluent.
    Matched MeSH terms: Plant Oils*
  18. Fulltext An Experimental Study of Briquetting Process of Torrefied Rubber Seed Kernel and Palm Oil Shell
    Hamid MF, Idroas MY, Ishak MZ, Zainal Alauddin ZA, Miskam MA, Abdullah MK
    Biomed Res Int, 2016;2016:1679734.
    PMID: 27419127 DOI: 10.1155/2016/1679734
    Torrefaction process of biomass material is essential in converting them into biofuel with improved calorific value and physical strength. However, the production of torrefied biomass is loose, powdery, and nonuniform. One method of upgrading this material to improve their handling and combustion properties is by densification into briquettes of higher density than the original bulk density of the material. The effects of critical parameters of briquetting process that includes the type of biomass material used for torrefaction and briquetting, densification temperature, and composition of binder for torrefied biomass are studied and characterized. Starch is used as a binder in the study. The results showed that the briquette of torrefied rubber seed kernel (RSK) is better than torrefied palm oil shell (POS) in both calorific value and compressive strength. The best quality of briquettes is yielded from torrefied RSK at the ambient temperature of briquetting process with the composition of 60% water and 5% binder. The maximum compressive load for the briquettes of torrefied RSK is 141 N and the calorific value is 16 MJ/kg. Based on the economic evaluation analysis, the return of investment (ROI) for the mass production of both RSK and POS briquettes is estimated in 2-year period and the annual profit after payback was approximately 107,428.6 USD.
    Matched MeSH terms: Plant Oils/chemistry*
  19. Suspected contaminated margosa oil poisoning
    Paranjothy M
    Med J Malaysia, 1978 Sep;33(1):17-9.
    PMID: 750889
    Matched MeSH terms: Oils/poisoning
  20. Valorization of Dacryodes rostrata fruit through the characterization of its oil
    Tee LH, Yang B, Tey BT, Chan ES, Azlan A, Ismail A, et al.
    Food Chem, 2017 Nov 15;235:257-264.
    PMID: 28554634 DOI: 10.1016/j.foodchem.2017.05.021
    Dacryodes rostrata (kembayau) is an important food and oil resource for local communities in Borneo, but it is not commonly known to wider community. The objective of this work is to valorize kembayau fruit by evaluating the characteristics of the oil from the fruit. In this study, the physicochemical characteristics and the lipophilic essential nutrient; the fatty acid composition, vitamin E and beta-carotene content of oils obtained from the peel, pulp and seeds of kembayau fruits were studied. The pulp of the kembayau fruit contained highest proportion of oil, followed by peel and seed. Kembayau fruit contained vitamin E and had trace amount of beta-carotene. Besides, kembayau fruit oils were not toxic to BRL3A cells, provided hepatoprotection and reversed lipid peroxidation in paracetamol-induced toxicity. Our results suggest that kembayau can be a potential source for cooking oil as the physicochemical characteristics are comparable with commercial source such as oil palm.
    Matched MeSH terms: Plant Oils/chemistry*
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