摘要
该研究以提高马铃薯淀粉渣的营养价值为目的。以马铃薯渣为主要原料,麸皮和蚕豆秸秆粉等为辅料,混合生料用纤维素酶进行降解处理后,再经黑曲霉与康宁木霉制备的糖化菌剂糖化降解,最后选用白地霉、产朊假丝酵母、酿酒酵母3种SCP发酵菌种,采用多菌协生生料固态发酵工艺研制马铃薯渣菌体蛋白饲料。通过对发酵产物中真蛋白、粗淀粉等指标的定量分析和感官特征的比较。结果表明,纤维素酶处理后的原料,经黑曲霉与康宁木霉双菌糖化降解后,在28℃条件下,经3种菌白地霉:产朊假丝酵母:酿酒酵母按8:1.5:0.5比例接种,混合发酵55h,多菌协生发酵产物的真蛋白含量有了较大的提高,由发酵前薯渣中的4.08%提高到发酵产物中的16.52%,增幅12.44%,且原料的霉腐等异味也得到了消除。生料多菌种固态发酵生产SCP饲料技术,为解决马铃薯淀粉渣提供了可行途径。
The aim of this study was to raise the nutrition of potato starch residue.In the fermentation production of single cell protein(SCP) feed,potato starch residue was employed as main material,and bran together with horsebean straw powder were used as supplementary material.The mixed raw material was degraded with cellulose enzyme,and then was saccharified with saccharifying koji of Aspergillas niger and Trichoderma koningii to form a solid degradation mixture.The mixture was fermented in solid after inoculating 3 strains,Geotrichum candidum,Candida utilis,and Saccharomgces cerevisae to get SCP feed succefully at 28℃ for 55 hours.The rate of inoculating amount was 8:1.5:0.5.The quality index of SCP feed including protein,rude starch and sensory characteristics were analysized.The results showed that the protein content of the fermented product was increased from 4.08% to 16.52%,raised by 12.44%,and the bad smell was also eliminated after fermentation.Multi-strains fermentation is one of the feasible technique approaches to resolve the problem of potato starch residue.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2010年第S2期399-404,共6页
Transactions of the Chinese Society of Agricultural Engineering
基金
甘肃省科技重大专项(0801XKDA031)
关键词
农业废弃物
固态发酵
工艺
马铃薯淀粉渣生料
SCP饲料
agricultural wastes,solid fermentation,technology,non-heat-treated potato starch residue,single cell protein feed
