搜索结果: 1-15 共查到“食品生物化学 extraction”相关记录27条 . 查询时间(0.192 秒)
Extraction, Fractionation, and Chemical Characterisation of Fucoidans from the Brown Seaweed Sargassum pallidum
brown seaweed Sargassum pallidum fucoidan extraction cytotoxic activity
2016/12/9
The fucoidans were obtained by extraction with water and gradient precipitation with different concentrations of ethanol. The main structural characterisations and bioactivities were achieved. Four fr...
Optimisation of microwave-assisted extraction of flavonoids and phenolics from celery (Apium graveolens L.) leaves by response surface methodology
Box-Behnken experimental design total flavonoids total phenolics antioxidant activity
2016/12/9
The conditions for microwave-assisted extraction (MAE) of total flavonoids (TF) and total phenols (TP), and antioxidant activity from celery (Apium graveolens L.) leaves by response surface methodolog...
Utilization of Egyptian Tomato Waste as a Potential Source of Natural Antioxidants Using Solvents, Microwave and Ultrasound Extraction Methods
Egyptian Tomato Waste Natural Antioxidants
2016/6/2
This study was conducted to access the extraction yield of antioxidant and their activity from Egyptian tomato waste. Conventional and novel assisted extraction methods (ultrasound and microwave) usin...
Physico-chemical and structural properties of four rice bran protein fractions based on the multiple solvent extraction method
rice bran protein fractions functional properties multiple solvent extract
2015/5/18
The physicochemical and structural properties of the concentrated rice bran protein (CRBP) and rice bran protein fractions – RBPF (albumin, globulin, prolamin, and glutelin) were investigated on the b...
A novel sorbent for solid-phase extraction coupling to high performance liquid chromatography for the determination of olaquindox in fish feed
HPCL molecular imprinting SPE olaquindox
2014/10/11
A new and hydrophilic molecularly imprinted polymer (MIP) selective for olaquindox was prepared by bulk polymerisation using methacrylic acid as the functional monomer and ethylene glycol dimethacryla...
Elaboration of novel extraction procedure to reveal bioactive component profile of anthocyanin-rich plants
anthocyanins antioxidant activity phenolic content fruits
2014/8/11
The content of anthocyanin derivatives, antioxidant activity, and phenolic content were determined in black elderberry (Sambucus nigra L.), sweet cherry (Prunus avium L.), blackberry (Rubus fruticosus...
Identification and classification of bulk paddy, brown, and white rice cultivars with colour features extraction using image analysis and neural network
stepdisc analysis HSI HSV back propagation algorithm, bulk images
2014/7/10
We identify five rice cultivars by mean of developing an image processing algorithm. After preprocessing operations, 36 colour features in RGB, HSI, HSV spaces were extracted from the images. These 36...
Acid and alkaline hydrolysis extraction of non-extractabke polyphenols in blueberries optimisation by response surface methodology
blueberry polyphenols acid hydrolysis process alkaline hydrolysis process response surface analysis
2014/7/10
Polyphenols, including extractable polyphenols (EPP) and non-extractable polyphenols (NEPP), are natural and secondary metabolic substances in plants that have beneficial properties to human health. H...
Fatty acid composition of oil obtained from soybeans by extraction with supercritical carbon dioxide
supercritical carbon dioxide extraction fractions soybean oil triacylglycerols
2014/2/24
Soybean oil fractions were obtained by collecting the extract at different time intervals during supercritical carbon dioxide extraction. The extraction was performed at the following temperatures: 31...
为了提高枸杞中黄酮类化合物的提取效果，通过超声波细胞粉碎仪的强化作用，对枸杞中的黄酮类化合物进行提取研究，通过单因素和正交试验确定最佳工艺参数。结果表明，最佳提取工艺参数为：乙醇体积分数80%，液料比50mL/g，超声波工作/间歇时间3s/1s，超声波功率500W，提取时间50min。在此条件下提取率达到89.87%。
Supercritical Fluid Extraction of Lovastatin from the Wheat Bran Obtained after Solid-State Fermentation
supercritical CO2 extraction solid-state fermentation lovastatin
2009/8/10
The objective of the present work is to extract lovastatin with minimum impurity by using supercritical carbon dioxide (SC-CO2). A strain of Aspergillus terreus UV 1617 was used to produce lovastatin ...
Solvent-Extraction Processes of Linoleic Acid Encapsulated with Gum Arabic, Pullulan or Maltodextrin at Different Weight Ratios
encapsulation linoleic acid extraction
2009/7/7
Linoleic acid was encapsulated with gum arabic, pullulan or maltodextrin at various weight ratios of the fatty acid to the wall material, and the fraction of the linoleic acid extracted from the micro...
Extraction of Antioxidants in Sweetpotato Waste Powder with Supercritical Carbon Dioxide
sweetpotato waste powder
2009/6/17
The application of supercritical carbon dioxide (SC-CO2) extraction to waste powder derived from sweetpotato roots with orange flesh in a food processing factory was examined. The contents of antioxid...
Changes in O-methylated Catechin and Chemical Component Contents of ‘Benifuuki’ Green Tea （Camellia sinensis L.）Beverage under Various Extraction Conditions
green tea beverage epigallocatechin-3-O-(3-O-methyl) gallate gallocatechin-3-O-(3-O-methyl) gallate
2009/6/10
We examined the effects of extraction conditions on the anti-allergic components, epigallocatechin-3-O-(3-O-methyl) gallate (EGCG3″Me) and strictinin during the manufacture of anti-allergic ‘Benifuuki...
Determination of Reductones, Furans and Organic Acids in Aqueous Model Matrices Using Solid-Phase Extraction and Gas Chromatography/Mass Spectrometry
reductone furan organic acid
2009/5/31
A method using solid-phase extraction (SPE) and GC-MS was developed for the determination of a series of polar and unstable flavor compounds: reductones, furans and volatile organic acids, in aqueous ...