通气和金属离子双重胁迫对糙米萌发富集γ-氨基丁酸的影响
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(1. 江南大学粮食发酵工艺与技术国家工程实验室,江苏 无锡 214122;2. 江南大学食品学院,江苏 无锡 214122)

作者简介:

张颖,女,江南大学在读硕士研究生。

通讯作者:

王韧(1980—),男,江南大学副教授,博士。E-mail:nedved_wr@jiangnan.edu.cn

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国家重点研发计划项目(编号:2017YFD0401103)


Effects of coercion germination with aeration and metal irons on the enrichment of γ-aminobutyric acid in germinated brown rice
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Affiliation:

(1. National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; 2. School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China)

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    摘要:

    为缩短糙米的发芽周期、提高发芽糙米的γ-氨基丁酸(γ-aminobutyric acid, GABA)含量,研究了通气胁迫、金属离子胁迫以及双重胁迫处理对糙米(镇糯19号)发芽效果(GABA含量、发芽率和芽长)的影响。试验结果表明:全程通气胁迫处理能显著加快糙米萌发速度并提高发芽后期糙米中GABA的含量,但是会导致芽体过长;发芽21 h后进行通气胁迫处理(9 h)能在提高GABA含量的同时,有效控制芽长在0.2 cm左右;采用钙离子(Ca2+)或铝离子(Al3+)进行胁迫萌发能大幅度提高发芽糙米中GABA的含量,当Ca2+浓度为35 mmol/L时,GABA增长率达到44.3%;双重胁迫萌发的最佳工艺条件为:糙米在35 mmol/L的Ca2+溶液中浸泡发芽21 h后以1.5 L/min的通气量通气9 h,共发芽30 h;在该条件下,镇糯19号胁迫萌发后γ-氨基丁酸含量达到28.18 mg/100 g,比正常发芽36 h的样品提高了64.42%,发芽率提高了2.65%。可见,通气和金属离子双重胁迫可显著提高GABA含量并缩短发芽周期。

    Abstract:

    In order to shorten the germination cycle of brown rice and increase the content of γ-aminobutyric acid (GABA), the effects of aeration coercion, metal ion coercion and double stress treatment on brown rice (Zhen waxy rice 19) were studied. The effects of the content, germination rate and bud length showed that the aeration treatment during the whole germination process can significantly accelerate the germination rate of brown rice and increase the content of GABA in brown rice in the late germination stage. However, it would lead to the buds being too long. Aeration treatment for 9 h can effectively control the bud length of 0.2 cm while increasing GABA content. The coercion germination with calcium ion (Ca2+) or aluminum ion (Al3+) can greatly increase the content of GABA in germinated brown rice. When the Ca2+ solution concentration was 35 mmol/L, the GABA growth rate reached 44.3%. The optimum conditions for the germination of double coercion treatment were as follows: brown rice immersed in 35 mmol/L Ca2+ solution for 21 h and then ventilated with 1.5 L/min for 9 h. The germination process lasted for a total of 30 h. Under this condition, the content of γ-aminobutyric acid reached 28.18 mg/100 g which was 64.42% higher than that of normal germination for 36 h and the germination rate increased 2.65%. It can be seen that the double coercion treatment with both aeration and metal ions can significantly increase GABA content and shorten germination cycle.

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引用本文

张颖,何健,王涛,等.通气和金属离子双重胁迫对糙米萌发富集γ-氨基丁酸的影响[J].食品与机械,2019,(5):55-60.
ZHANGYing, HEJian, WANGTao, et al. Effects of coercion germination with aeration and metal irons on the enrichment of γ-aminobutyric acid in germinated brown rice[J]. Food & Machinery,2019,(5):55-60.

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  • 收稿日期:2018-10-31
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  • 在线发布日期: 2022-11-26
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