[1]朱莉莉,李林强,张宝善,等.橡子粉发酵柠檬酸[J].江苏农业学报,2019,(02):445-452.[doi:doi:10.3969/j.issn.1000-4440.2019.02.027]
 ZHU Li-li,LI Lin-qiang,ZHANG Bao-shan,et al.Citric acid fermentation of acorn powder[J].,2019,(02):445-452.[doi:doi:10.3969/j.issn.1000-4440.2019.02.027]
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橡子粉发酵柠檬酸()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2019年02期
页码:
445-452
栏目:
加工贮藏·质量安全
出版日期:
2019-04-30

文章信息/Info

Title:
Citric acid fermentation of acorn powder
作者:
朱莉莉1李林强1张宝善2裴亚利1周琦1付军伟1颜统晶1
(1.陕西师范大学食品工程与营养科学学院,陕西西安710119;2.陕西省果蔬深加工工程技术研究中心,陕西西安710119)
Author(s):
ZHU Li-li1LI Lin-qiang1ZHANG Bao-shan2PEI Ya-li1ZHOU Qi1FU Jun-wei1YAN Tong-jing1
(1.College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi’an 710119, China;2.Research Center of Fruit and Vegetable Deep-Processing Technology, Xi’an 710119, China)
关键词:
橡子粉脱单宁柠檬酸发酵黑曲霉
Keywords:
acorn powderdetannincitric acidfermentationAspergillus niger
分类号:
S789.7
DOI:
doi:10.3969/j.issn.1000-4440.2019.02.027
文献标志码:
A
摘要:
橡子含较多单宁等涩味物质,导致其淀粉利用率低。本研究通过测定脱单宁、酶解及发酵过程中的关键指标,探究70%乙醇对单宁脱除效果的影响。采用数码生物显微镜及酸碱滴定法比较4种常见黑曲霉在发酵液中的形态及发酵产酸量。结果表明,70%乙醇脱单宁处理会显著促进橡子粉的液化和糖化作用,发酵液中黑曲霉的生物量和产酸量显著提高(P<0.05);黑曲霉SIIM M288在33 ℃下的柠檬酸产量为37.30 g/L,显著高于其他3株菌(P<0.05),该菌在发酵液中以菌丝球形态分布,菌丝无色透明、短而粗、分支少、稀疏着生。说明,脱单宁处理会促进橡子粉的柠檬酸发酵,黑曲霉SIIM M288为橡子粉发酵柠檬酸的优势菌种,最佳发酵温度为33℃。
Abstract:
Acorn contains plenty of astringent substances such as tannins, resulting in low starch utilization. In this study, the effects of 70% ethanol solution on the removal of tannins were investigated by measuring the key indicators in the process of de-tanninization, enzymatic hydrolysis and fermentation. Digital biomicroscopy and acid-base titration were used to compare the morphology of the four common Aspergillus niger in fermentation broth and the amount of acid production. The results showed that liquefaction and saccharification of acorn powder were significantly promoted in the treatment of 70% ethanol solution, and the biomass and acid production of the Aspergillus niger in fermentation broth were significantly increased(P<0.05). The citric acid yield of Aspergillus niger SIIM M288 at 33 ℃ was 37.30 g/L, which was significantly higher than that of the other three strains (P<0.05). In addition, the strain was distributed in the form of mycelial pellets in fermentation broth, and its mycelia were colorless and transparent, short and thick, with few branches and sparsely born. In conclusion, the removal of tannin promotes the citric acid fermentation of acorn powder. Aspergillus niger SIIM M288 is the dominant strain for the citric acid fermentation of acorn powder, and its optimum fermentation temperature is 33 ℃.

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备注/Memo

备注/Memo:
收稿日期:2018-07-11 基金项目:陕西师范大学中央高校基本科研业务费创新团队项目(GK201601007);陕西省科技统筹创新工程计划项目(2016KTCL02-33);陕西省农业科技创新与攻关项目(2015NY009) 作者简介:朱莉莉(1995-),女,安徽蚌埠人,硕士研究生,研究方向为粮食、油脂及植物蛋白工程。(E-mail)Zhulili@snnu.edu.cn 通讯作者:李林强, (E-mail)lilinq@ snnu.edu.cn
更新日期/Last Update: 2019-05-05