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| 本文是關(guān)于鯊魚皮中膠原多肽的分離純化與表征的研究。鯊魚皮中蛋白質(zhì)的含量為86.95%(含量以鯊魚皮干物質(zhì)計算),其中61.45%是膠原蛋白。先以鯊魚皮為原料提取明膠,然后再分別使用復(fù)合蛋白酶、中性蛋白酶、堿性蛋白酶、酸性蛋白酶和木瓜蛋白酶對其酶解5個小時,考察酶解產(chǎn)物的水解度和三種體外抗氧化活性指標(biāo)(包括DPPH自由基清除活性、ABTS自由基清除活性和抗脂質(zhì)過氧化反應(yīng)),最終確定以酸性蛋白酶酶解產(chǎn)物和DPPH自由基清除活性作為后續(xù)分離純化實驗的原料和活性跟蹤指標(biāo)。 |
新蟲 (文學(xué)泰斗)
外剛內(nèi)柔之逍遙達(dá)子
新蟲 (文學(xué)泰斗)
外剛內(nèi)柔之逍遙達(dá)子
| This article is studied the purification and characterization about the shark skin collagen peptides. The protein content of Shark skin was 86.95% and collagen was about 61.45% which was calculated by dry matter. Firstly, the gelatin was extracted from shark skin, and then the gelatin was hydrolyzed by protease, neutral protease, alkaline protease, acid and papain enzyme for 5 hours, respectively. Then, we studied the degree of hydrolysis hydrolysates and three in vitro antioxidant Activity indicators which was included DPPH radical scavenging activity, ABTS radical scavenging activity and lipid peroxidation. Finally, the acid protease enzyme product and DPPH radical scavenging activity was chosen as raw materials and active tracking experiment indicators for the follow-up purification. |
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