南京林业大学学报(自然科学版) ›› 2022, Vol. 46 ›› Issue (5): 135-142.doi: 10.12302/j.issn.1000-2006.202012034

• 研究论文 • 上一篇    下一篇

响应面法优化白果酒酶解及发酵工艺研究

陈柏林1(), 汪贵斌1, 郭起荣1, 王佳宏1,2, 苏二正1,2, 曹福亮1,*()   

  1. 1.南京林业大学,南方现代林业协同创新中心,江苏 南京 210037
    2.南京林业大学轻工与食品学院, 食品科学与工程系, 江苏 南京 210037
  • 收稿日期:2020-12-24 修回日期:2021-01-21 出版日期:2022-09-30 发布日期:2022-10-19
  • 通讯作者: 曹福亮
  • 基金资助:
    国家重点研发计划(2017YFD0600701)

Optimization of enzymatic hydrolysis and fermentation conditions of Ginkgo biloba wine using response surface methodology

CHEN Bolin1(), WANG Guibin1, GUO Qirong1, WANG Jiahong1,2, SU Erzheng1,2, CAO Fuliang1,*()   

  1. 1. Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
    2. Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
  • Received:2020-12-24 Revised:2021-01-21 Online:2022-09-30 Published:2022-10-19
  • Contact: CAO Fuliang

摘要:

【目的】以白果为研究材料,通过对酶解和发酵两个阶段的工艺优化,探究白果发酵酒工艺的最佳条件。【方法】采用淀粉酶解配合传统果酒发酵方法,通过单因素试验和响应面试验研究白果酶解和发酵两个阶段中酶制剂添加量、发酵时间、料液比、加糖量等工艺条件,以葡萄糖当量(DE值)、葡萄糖含量、酒精度和模糊数学感官评价得分作为评价指标,筛选白果酶解、发酵的适宜条件。【结果】α-淀粉酶和料液比对白果酶解和发酵两个阶段影响最大;白果酒酶解阶段最佳条件为α-淀粉酶19.1 U/mL、普鲁兰酶2.7 U/mL、糖化酶101.4 U/mL;发酵阶段料液比(g/mL)为1∶6.4、加糖比例为1∶2.6、发酵时间8 d。在此优化条件下,得到的白果酒总糖16.21 g/L、总酸3.24 g/L、酒精度12.7%、干浸出物12.92 g/L、游离氨基酸含量2.18 g/L,感官综合得分为87.35分(满分100分)。【结论】白果发酵后所得白果酒成分指标满足绿色果酒标准,实验结果可为制备白果发酵酒提供一定理论依据。

关键词: 白果酒, 响应面法, 工艺优化, 感官评价

Abstract:

【Objective】 In this study, Ginkgo biloba seeds were used as the raw material for fermentation to explore the best fermentation conditions for G. biloba wine through the optimization of enzymatic hydrolysis and fermentation. 【Method】 Amylase hydrolysis and traditional fermentation were used in the experiment. The single factor test and the response surface method were used to study the technological conditions for enzyme addition, fermentation time, solid-liquid ratio, and sugar content in the two stages of enzymatic hydrolysis and fermentation. The dextrose equivalent (DE) value, glucose content, alcohol content, and the fuzzy mathematics sensory evaluation score were used as evaluation indices to select suitable conditions for enzymatic hydrolysis and fermentation of G. biloba. 【Result】α-amylase and the solid-liquid ratio had the most pronounced influence on the two stages of enzymolysis and fermentation, respectively. The optimal conditions were as follows: α -amylase 19.1 U/mL, pullulanase 2.7 U/mL, glucoamylase 101.4 U/mL, solid-liquid ratio 1∶6.4 (g/mL), sugar content 1∶2.6, with a fermentation time of 8 d. Under these optimized conditions, the total carbohydrates, total acid, alcohol content, dry extract and free amino acid content of G. biloba wine were 16.21 g/L, 3.24 g/L, 12.7%, 12.92 g/L, and 2.18 g/L, respectively. The sensory comprehensive score was 87.35 with a full score of 100. 【Conclusion】 The components of G. biloba wine meet the standard of green fruit wine, and the results of this study provide a theoretical basis for the preparation of G. biloba wine.

Key words: Ginkgo biloba wine, response surface methodology, process optimization, sensory evaluation

中图分类号: