大曲酒糟中纤维素提取工艺的优化
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摘要
酒糟中含有大量的稻壳、淀粉等可再利用的能源物质,并且产量大,造成我国特有农产品深加工的沉重负担,但也有巨大的再利用的潜力。因此,为有效的再利用酒糟,本研究以大曲酒糟为研究对象,考察了纤维素提取工艺中碱浓度、碱水解温度和料液比等多方面因素对纤维素提取的影响。结果表明:纤维素的提取率及纯化程度主要受碱浓度的影响。大曲酒糟纤维素提取优化条件为:NaOH浓度0.5mol/L,料液比1:11,碱水解温度60℃。
Distiller'grains contains lots of recyclable energy sources, such as rice hull and starch.However,it also has huge recycled potential.So,in hope of recycle lees effectively,this research studied certain factors,such as alkali concentration, alkali hydrolyzation centigrade and liquid-to-solid ratio effect on the pick-up of cellulose in technics of distilling cellulose. This experiment took the Daqu distiller'grains lees as subject investigated,then used range analysis. The result indicated that extraction rate and the degree of purification of cellulose were affected mostly by alkali concentration. Conclusion: the optimum pick-up conditions of cellulose in Daqu distiller'grains were as follows:with 0.5 N sodium hydroxide,solid-to-liquid ratio 1:11,alkali hydrolyze at 60℃
Distiller'grains contains lots of recyclable energy sources, such as rice hull and starch.However,it also has huge recycled potential.So,in hope of recycle lees effectively,this research studied certain factors,such as alkali concentration, alkali hydrolyzation centigrade and liquid-to-solid ratio effect on the pick-up of cellulose in technics of distilling cellulose. This experiment took the Daqu distiller'grains lees as subject investigated,then used range analysis. The result indicated that extraction rate and the degree of purification of cellulose were affected mostly by alkali concentration. Conclusion: the optimum pick-up conditions of cellulose in Daqu distiller'grains were as follows:with 0.5 N sodium hydroxide,solid-to-liquid ratio 1:11,alkali hydrolyze at 60℃
引文
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[2]牟德华,康明丽等.板栗饮料工艺中淀粉的酶转化研究[J].工艺技术,2002,23(11):72~74.
[3]宋纪蓉,徐抗震,黄洁等.利用苹果渣制备膳食纤维的工艺研究[J].食品科学,2003,24(2):69~72.
[4]蔡宝玉,王雷等.莲藕残渣中纤维素的制备工艺[J].食品工业,2004,(3):14~16.
[5]王钦德,杨坚.食品实验设计与统计分析[M].北京:中国农业大学出版社,2003.2.
[6]张桂,赵国群.麦麸膳食纤维素的研制[J].农产品加工.学刊,2005,4(1):37~39.
[7]张鸿发,励建荣等.从柑桔皮中提取食用纤维的工艺[J].食品研究与开发,2000,21(2):26~27.
[8]马莺,王静,牛天娇等.功能性食品活性成分测定[M].北京:化学工业出版社,2005(3):95~97.
[9]熊素敏,左秀凤,朱永义.稻壳中纤维素、半纤维素、木质素的测定[J].粮食与饲料工业,2005,(8):40~41.