蒸汽爆破参数对菜籽粕中总硫苷脱毒效果的影响

发布时间：2018-03-14 11:28

本文选题：蒸汽爆破　切入点：菜籽粕　出处：《动物营养学报》2017年02期 　论文类型：期刊论文

【摘要】：本试验旨在研究蒸汽爆破参数(水料比、蒸汽压强、维压时间)对菜籽粕中总硫苷脱毒效果的影响,并用体外仿生法对脱毒菜籽粕的营养物质消化率进行评价。试验均采用单因素试验设计,分别筛选出最适的水料比、维压时间与蒸汽压强,每个试验处理设4个水平,每个水平3个重复。结果表明:蒸汽爆破处理对菜籽粕中总硫苷的脱毒效果明显,总硫苷脱毒率达73.71%~86.98%。以总硫苷脱毒率为筛选指标,按单因素试验设计,分别筛选出最适的水料比为25%,最适的维压时间为60 s,最适的蒸汽压强为2.0 MPa。以菜籽粕营养物质消化率筛选指标时发现,与未处理组相比,1.0、1.5 MPa(固定水料比为25%、维压时间为60 s)蒸汽压强对菜籽粕营养物质消化率无显著影响(P0.05),2.0 MPa蒸汽压强时可显著或极显著降低粗蛋白质、赖氨酸、精氨酸的消化率(P0.05或P0.01),提高蒸汽压强可极显著降低总硫苷、异硫氰酸酯的含量(P0.01)。综合考虑总硫苷脱毒率与营养物质消化率指标,当固定水料比为25%、维压时间为60 s时,适宜的蒸汽压强以不大于2.0 MPa为宜。
[Abstract]:The purpose of this experiment was to study the effect of steam blasting parameters (water-material ratio, steam pressure, pressure time) on the detoxification effect of total glucosinolates in rapeseed meal. The nutrient digestibility of detoxified rapeseed meal was evaluated by bionic method in vitro. The results showed that the detoxification effect of steam blasting on total glucosinolate in rapeseed meal was obvious, and the detoxification rate of total glucosinolate reached 73.71% and 86.98%. The detoxification rate of total glucosinolates was used as the screening index. The optimum ratio of water to material was 25, the optimum pressure time was 60 s, and the optimum steam pressure was 2.0 MPa. When the digestibility of rapeseed meal was selected, it was found that, Compared with the untreated group, the steam pressure had no significant effect on the digestibility of nutrients of rapeseed meal (the fixed water / material ratio was 25 and the pressure time was 60 s). The crude protein, lysine, and lysine were decreased significantly or very significantly under the steam pressure of P0.05 and 2.0 MPa, and the effect of steam pressure on the digestibility of rapeseed meal was not significant. The digestibility of arginine (P 0.05 or P 0.01) could decrease the total glucosinolates and the content of isothiocyanates was significantly decreased by increasing steam pressure. When the ratio of water to material was 25 and the pressure time was 60 s, the detoxification rate of total glucosinolate and the digestibility of nutrients were taken into account. The suitable steam pressure is no more than 2.0 MPa.
【作者单位】：河南科技学院动物科学学院河南省畜禽智能清洁生产工程技术研究中心畜禽智能化清洁生产河南省工程实验室;
【基金】：河南省现代农业产业体系——生猪产业体系创新团队(S2012-06-02) 河南科技学院攀登计划(2015197)
【分类号】：S816

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