酿酒用高产洛伐他汀红曲菌的筛选
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国家重点研发计划项目(2018YFD0400401); 国家自然科学基金面上项目(31771968); 江苏省科协青年科技人才托举工程项目(5924130202190090); 绍兴市科技计划专项项目(2019B11001)。


Screening of Monascus Strains with High Lovastatin Production for Brewage
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National Key R & D Program (2018YFD0400401); General Program of National Natural Science Foundation of China (31771968); Young Scientific and Technological Talents Lifting Project of Jiangsu Association for Science and Technology (5924130202190090); Special Program of Shaoxing Science and Technology Plan (2019B11001).

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    摘要:

    为获得酿酒用高产洛伐他汀红曲菌株,研究以洛伐他汀含量、红曲色素色价、桔霉素含量及红曲菌产酶能力为评价指标,通过固态发酵法从不同产地40份红曲米中筛选出1株高产洛伐他汀的菌株H5-3,经形态观察和分子生物学鉴定,判定该菌株为紫色红曲菌。经过检测,菌株H5-3的洛伐他汀产量高达17.90mg/g,红色素色价3195.27μ/g,糖化酶、液化酶、酸性蛋白酶的活力分别达2514.26、0.32、300.19U/g,且该菌株不产桔霉素,是可应用于红曲黄酒酿造的功能红曲菌。进一步将该紫色红曲菌H5-3应用于红曲黄酒的酿造,制得的红曲黄酒中洛伐他汀质量浓度63.75mg/L,红色素色价22.86μ/mL,酒精度14.86%,总酸4.90g/L,氨基酸态氮0.83g/L。对制得的红曲黄酒风味物质进行分析,发现有机酸质量浓度为12.70g/L,其中乳酸、乙酸、琥珀酸、酒石酸、柠檬酸为其主要成分,分别占总量质量分数的28.2%、21.9%、14.5%、12.2%、5.7%;游离氨基酸质量浓度3540.58mg/L;在挥发性风味物质中,酯类、醇类为主要成分,分别占总量质量分数的48.4%、43.9%,其中乙酸乙酯、乳酸乙酯、丁二酸二乙酯、正丙醇、苯乙醇等含量较高,对风味有较大贡献;有机酸、游离氨基酸和挥发性风味物质含量比例协调。希望研究对传统红曲菌种资源的发掘利用以及红曲黄酒保健功能的提升具有参考价值。

    Abstract:

    In order to obtain high lovastatin producing Monascus strains for liquor-making, lovastatin content, Monascus pigment color value, citrinin content and Monascus enzyme production capacity were used for evaluation indexes, and a H5-3 strain with high lovastatin production was screened from 40 Hongqu samples collected from different producing areas by solid-state fermentation. The strain H5-3 was identified as Monascus purpureus by morphological observation and molecular identification. After detection, the yields of lovastatin and Monascus pigment produced by strain H5-3 were 17.90mg/g and 3195.27μ/g, respectively. The activities of glucoamylase, liquefying enzyme and acid protease were 2514.26U/g, 0.32U/g and 300.19U/g, respectively. And no citrinin was detected indicating that the strain H5-3 could be used as functional Monascus sp. strain for Hongqu Huangjiu brewing. Furthermore, Monascus purpureus H5-3 was applied to the brewing of Hongqu Huangjiu. The content of lovastatin and Monascus pigment color value in Hongqu Huangjiu were 63.75mg/L and 22.86μ/mL, respectively. The contents of alcohol, total acid and amino nitrogen were 14.86%, 4.90g/L and 0.83g/L, respectively. By analyzing the flavor compounds of Hongqu Huangjiu, the results indicated that the mass concentration of organic acids was 12.70g/L, and lactic acid, acetic acid, succinic acid, tartaric acid and citric acid were the main components, respectively accounting for 28.2%, 21.9%, 14.5%, 12.2% and 5.7% of the total mass fraction. And the mass concentration of free amino acids was 3540.58mg/L. In the volatile flavor compounds, esters and alcohols were the main components, accounting for 48.4% and 43.9%, respectively. The contents of ethyl acetate, ethyl lactate, diethyl succinate, n-propanol and phenylethanol were higher, which contributed a lot to the flavor. Thus the proportion of organic acids, free amino acids and volatile flavor compounds was coordinated and balanced. The research was expected to be of reference value for the exploration and utilization of traditional Monascus species resources and the promotion of health function of Hongqu Huangjiu.

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吴玉峰,刘双平,韩笑,应维茂,毛健.酿酒用高产洛伐他汀红曲菌的筛选[J].食品科学技术学报,2021,39(6):77-86.

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  • 收稿日期:2021-01-12
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  • 在线发布日期: 2021-12-29
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