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Corn starches (25g, d. b.) were treated in anhydrous methanol, ethanol, 2-propanol or 1-butanol (100ml) with 1ml 36% hydrochloric acid at 45°C for 1h, the molecular weight and chain length distributions of starch were examined by high-performance size-exclusion chromatography (HPSEC), and the granule size, granular structure, λ max , blue value, solubility and gelatinization thermal properties...
Effects of several conditions (liming concentrations, extraction solution pH, extraction temperature and extraction time) to extract gelatin from skate skin on the yield and quality properties were investigated. The optimum conditions for gelatin extraction are as follows; place skin in a lime solution of 1.5% (w/v) calcium hydroxide, extract with three volumes of water (pH 6.0) for 4h at 50%, filter...
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