曲酒糟发酵生产燃料乙醇技术研究

曲酒生产过程中会产生大量的废弃物曲酒糟,如何综合利用,已成为白酒行业的工作重点。采用酸水解与酶水解法对曲酒糟进行高温水解,完善p H、预处理、温度及保温时间等工艺参数,利用耐高温α-淀粉酶、纤维素酶、糖化酶、酸性蛋白酶等多种生物酶系对曲酒糟中的纤维素进行发酵,并通过蒸馏得到燃料乙醇。实现了副产物的综合利用,解决白酒生产过程中的固体废物对环境的污染问题。

曲酒糟菌体蛋白饲料喂育肥猪试验

曲酒糟是泸州酿酒产业的大宗副产物,年产量达30余万吨。曲酒糟中含粗蛋白14％以上,并富含糖类、脂类及多种氨基酸成分,是养殖业上极具开发利用价值的饲料资源。 由于在曲酒生产发酵过程中,添加入大量稻壳,曲酒糟中粗纤维含量过高,严重影响了用于饲喂禽畜的效果。因而,多年来农户仅将其中一部分作填充料使用。而多数仍被厂家废弃,既污染环境,又浪费资源。为提高酿酒工业的整体效益,为使宝贵资源得到合理、有效利用。

曲酒糟高蛋白饲料研究

利用微生物作用生产的曲酒糟高蛋白饲料,其纯蛋白含量为21.0%,比原酒糟提高了24.4%,赖氨酸增长幅度高达98.1%,V_E和胡卜素分别增长38.1%和37.5%,而酒糟中的粗纤维和淀粉分别下降20.97%和55.6%,通过动物饲喂试验,以添加20%的曲酒糟蛋白饲料效果最佳,且对猪的生长及肉质均无不良影响.

用黄酒糟替代熟麦制曲的工艺

以黄酒生产的副产物酒糟为主要制曲原料 ,根据制曲原理和米曲霉培养生长要求 ,合理配入小麦、麸皮进行曲料组合 ,在工艺中采用原料轧碎、曲料上甑、加热汽化、蒸馏取酒、扬冷接种、曲料入箱、通风制曲 ,制成的糟麦曲具有曲香浓醇、菌丝紧密、酶活力高的特征。试制结果证实 ,酒糟替代熟麦制曲具有较高的实用价值和经济效益。

Production of microbial oils co-fermented by Trichoderma.koningii and Trichosporon cutaneum with Daqu distiller's grains

Abstract： Daqu distiller＇s grains were co-fermented as raw materials by Trichoderma.koningii and Trichosporon cutaneum to produce microbial oils, which can provide raw materials for bio-diesel development. The single factor tests were used to investigate the effects of ratio of strains, inoculum size, culture temperature and culture time on the production of microbial oils. The best processing conditions were obtained by orthogonal test through measuring the content of microbial oils in product. The result shows that the microbial oils content of the co-fermented product under the ratio of Trichoderma.koningii to Trichosporon cutaneum of 1：1, the inoculum size of strains of 11% at 28 ℃ for 6 d is 7.15 g/L. It is shown that the production of microbial oils co-fermented by Trichoderma.koningii and Trichosporon cutaneum with Daqu distiller＇s grains is possible. The research provides a new idea for the reuse of Daqu distiller＇s grains and also provides a new way for the development of microbial oils.