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首页> 外文期刊>Cotton Reseach Journal >Gossypol Detoxification in Various Cottonseed Extractions by Fungal Cultures DuringSolid State Fermentation
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Gossypol Detoxification in Various Cottonseed Extractions by Fungal Cultures DuringSolid State Fermentation

机译：固态发酵过程中真菌培养对棉籽提取物中棉酚的解毒作用

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摘要

Cottonseed cake is a rich protein source used traditionally in ruminant feeds and used as nitrogen source for various fermentations. However, extensive use of this protein is restricted due to the presence of gossypol, which has toxic effect on non-ruminants. The objective of this present study was to determine the effect of seven different fungal strains on the reduction of free gossypol (FG), total gossypol (TG), crude protein (CP), crude fibre (CF) and oil content during Solid state fermentation (SSF) of cottonseed cake and meal. The study involved different cottonseed extractions for fermentation such as De-oiled cottonseed cake (DOCSK), Decorticated cottonseed cake (DCSK), Un-decorticated cottonseed cake (UDCSK) and Cottonseed meal (CSM). The experimental results showed that the microbial fermentation could greatly decrease gossypol, fibre and oil and increase protein contents whereas the detoxification efficiency varies between the substrates used. The maximum reduction in FG (81%), TG (59%),CF (44%), oil content (85%) and increased protein (18%) was found in UDCSK fermented substrate as compared to others. The cottonseed extractions fermented by C. tropicalis, S. cerevisiae, S. cerevisiae 6933, P. sajor-caju and P. flabellatus have reduced gossypol and improved nutritional properties which could be a potent protein feed supplement for non-ruminants.
机译：棉籽饼是一种丰富的蛋白质来源，传统上用于反刍动物饲料中，并用作各种发酵的氮源。但是，由于棉酚的存在，限制了该蛋白的广泛使用，棉酚对非反刍动物具有毒性作用。本研究的目的是确定固态发酵过程中七种不同真菌菌株对减少游离棉酚（FG），总棉酚（TG），粗蛋白（CP），粗纤维（CF）和含油量的影响（SSF）棉籽饼和粕。该研究涉及用于发酵的不同棉籽提取物，例如脱油棉籽饼（DOCSK），脱壳棉籽饼（DCSK），非脱壳棉籽饼（UDCSK）和棉籽粕（CSM）。实验结果表明，微生物发酵可以大大减少棉酚，纤维和油脂并增加蛋白质含量，而排毒效率因所使用的底物而异。与其他相比，UDCSK发酵底物中的FG（81％），TG（59％），CF（44％），油含量（85％）和蛋白质增加（18％）降低最大。由热带假单胞菌，酿酒酵母，酿酒酵母6933，sajor-caju和flabellatus发酵的棉籽提取物减少了棉酚并改善了营养特性，这可能是非反刍动物有效的蛋白质饲料补充剂。

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