摘要
研究了多菌种分步降解玉米秸秆产蛋白饲料的工艺条件,选用黄孢原毛平革菌固体发酵去除部分木质素,接入木霉菌进一步降解木质纤维素,加入酵母发酵产蛋白饲料。木霉菌最佳接种时间为第10天,经12d的共发酵,按秸秆与麸皮配比3.0∶1加入麸皮、酵母接种量8%、固液比1∶3.0、硫酸铵用量2.5%,继续共发酵72h,粗蛋白质量分数可达25.3%。结果表明,多菌种分步降解产蛋白饲料工艺为玉米秸秆生物利用提供了一种新途径。
The technology of producing protein feed from distributional degradation of corn stalk by multi-strain was studied. Most of lignin was degraded through solid fermentation by Phanerochaete chrysosporium.Then Trichoderma viride was vaccinatated for further degradation of lignocellulose.Protein feed was produced by adding Candida utilis.The results manifested that the optimal technical conditions were as follows：Trichoderma viride inoculation time was the10 th day; fermention time was 12 days;After the bran was added into stalk by the ratio of 1︰3.0,the best technical conditions were yeast inoculation 8%;mixture ratio of solid to liquid 1︰3.0;addition volume of ammonium sulfate 2.5%,continuous fermentation time 72 h.Under the optimal conditions,the content of crude protein was up to 25.3%.The results show that distributional degradation technology of producing protein feed by multi-strain provides a new method for utilization of corn stalk.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2009年第12期331-334,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
陕西省科技攻关项目(2007JK01-13-2)
咸阳市科技攻关项目资助(K0311-2)
关键词
秸秆
降解
工艺
玉米
多菌种
蛋白饲料
straw
degradation
tednology
corn
multi-strain
protein feed
