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41 results for “extraction temperature”
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Research ArticleOpen accessIn the abstractMICROWAVE-ASSISTED EXTRACTION OF PHENOLIC ANTIOXIDANTS FROM SEMIARID PLANTSJorge E. Wong-Paz, Juan C. Contreras-Esquivel, Diana Muñiz-Marquez et al.Microwave-Assisted Extraction (MAE) kinetic in three temperatures was investigated for extraction of antioxidant phenolic compounds from Jatropha dioica, Flourensia cernua, Eucalyptus camaldulensis and Turnera diffusa which are plants of semiarid regions of Mexico. The two-site kinetic model and saturation simple equation were used to describe the experimental data. The fit of the data demonstrated that saturation simple equation was better … …American Journal of Agricultural and Biological Sciences, Vol. 9, Issue 3 · 22 Mar 2014 · 7,609 accessesView PDFCite
Research ArticleOpen accessIn the abstractInfluence of Extraction Conditions on the Recovery of Phenolic Antioxidants from Spent Coffee GroundsAntonio Zuorro, Roberto LavecchiaThe extraction of phenolic compounds from Spent Coffee Grounds (SCG), a waste produced in large amounts worldwide, was investigated. SCG were rich in fiber and protein and had a total phenolic content of 18.75±0.43 mg GAE per gram dry weight. Extraction experiments were carried out in batch mode, using ethanol-water mixtures as solvent. A two-level factorial design was used to … …American Journal of Applied Sciences, Vol. 10, Issue 5 · 28 May 2013 · 8,798 accessesView PDFCite
Research ArticleOpen accessIn the abstractImplications of Method Chosen for Analysis of Fatty Acids in Meat: A ReviewLivia Facuri Araujo Macedo, Ellen Cristina Quirino Lacerda, Roberio Rodrigues Silva et al.The influence of the beef Fatty Acid (FA) profile on human health, has become a recurring concern. For an analysis of the lipid composition of food, it is necessary that the complex lipids be quantified in a suitable form for subsequent analysis of their composition by gas chromatography. The choice of appropriate methods of lipid extraction and esterification of fatty … …American Journal of Agricultural and Biological Sciences, Vol. 7, Issue 3 · 9 Jul 2012 · 8,633 accessesView PDFCite
Research ArticleOpen accessIn the abstractNutrient Composition of Dandelions and its Potential as Human FoodAbdel E. Ghaly, Deepika Dave, Nesreen MahmoudTwo thirds of the world’s populations are suffering from protein malnutrition and about 36 million people die every year due to hunger. Expansion of present agriculture practices into marginal land is not expected to solve the problem of increasing the food supply. New methods of feeding the ever increasing world population must be developed. The aim of the study was … …American Journal of Biochemistry and Biotechnology, Vol. 8, Issue 2 · 22 Jun 2012 · 10,949 accessesView PDFCite
Research ArticleOpen accessIn the abstractExtraction and Evaluation of Antibacterial Activity from Selected Flowering PlantsErlina Abdullah, Raha Ahmad Raus, Parveen JamalThe huge diversity of Malaysian flora has various chemical constituents that make them as outstanding natural product candidates for the treatment of infectious diseases. The screening practice for phytochemical compound in them is essential to explore more natural sources to replace synthetic antibiotics, which generally have side effects such as hypersensitivity, immune-suppression and allergic reactions. Antibacterial activities have been detected … …Current Research in Medicine, Vol. 3, Issue 1 · 20 Feb 2012 · 16,312 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Effects of Batch Reactor Extraction on Antioxidant Activity from Scurulla atropurpureaSiti Irma Rahmawati, Nobuyuki HayashiProblem statement: The main active compounds of benalu teh’s include alkaloids and flavonoids, therefore antioxidant of it has big potential to develop. In the context of extraction, the traditional (boiling in the water until one-third remain) extraction require a long extraction time and result in low yields of extraction also antioxidant activities. Approach: Batch reactor is extraction at high temperature … …American Journal of Applied Sciences, Vol. 9, Issue 3 · 17 Jan 2012 · 6,785 accessesView PDFCite
Research ArticleOpen accessIn the abstractExtraction, Purification and Characterization of Fish Chymotrypsin: A ReviewLiang Zhou, Suzanne M. Budge, Abdel E. Ghaly et al.Problem statement: Solid fish waste is generated from the unwanted parts of fish including heads, tails, fins, frames, offal (guts, kidney and liver) and skin. It accounts for up to 80% of material from production of surimi, 66% from production of fillet and 27% from production of headed and gutted fish. Currently, fish wastes are disposed off in land-based waste … …American Journal of Biochemistry and Biotechnology, Vol. 7, Issue 3 · 22 Sep 2011 · 10,585 accessesView PDFCite
Research ArticleOpen accessIn the abstractMixed-Polarity Azeotropic Solvents for Efficient Extraction of Lipids from Nannochloropsis MicroalgaeRobert D. Long, Elseddik AbdelkaderProblem statement: The extraction of lipids from microalgae for biofuel production is a significant problem due to the intractability of their cell wall. The aim of this study of lipid extraction from Nannochloropsis microalgae was to examine the relative efficiencies of some commonly used solvent systems and test the use of co-boiling solvents in Soxhlet extraction as an improved method. … …American Journal of Biochemistry and Biotechnology, Vol. 7, Issue 2 · 12 Aug 2011 · 9,387 accessesView PDFCite
Research ArticleOpen accessIn the abstractExtraction and Purification of Collagenase Enzymes: A Critical ReviewSaid M Daboor, Suzanne M Budge, Abdel E Ghaly et al.Problem statement: Enzymes have vital roles in several industrial processes (foods, cosmetics, nutraceuticals and pharmaceuticals) due to their highly selective nature and high activity at very low concentrations. Recent efforts to identify new sources of useful enzymes have been concentrated on the marine environment because of the potential to make use of processing wastes. About 35-50% of the mass of … …American Journal of Biochemistry and Biotechnology, Vol. 6, Issue 4 · 31 Dec 2010 · 14,311 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Temperature and Time to the Antioxidant Activity in Plecranthus amboinicus Lour.Mohd S. Azman Abdul Rahim, Jailani Salihon, Mashitah Mohd Yusoff et al.Problem statement: Processing of food involving heat will contribute to loss of nutritional content, thus it is important to measure and control temperature and time to reduce the loss. Approach: Examine the effects of variations in boiling temperature and boiling time on the antioxidant activity of the boiling extract of Plecranthus amboinicus Lour. Fresh plants were boiled at 45, 60, … …American Journal of Applied Sciences, Vol. 7, Issue 9 · 30 Sep 2010 · 9,249 accessesView PDFCite