| 锁掷酵母中圆酵母素稳定性的研究 |
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| 引用本文： | 施秋妤, 汪何雅, 钱和. 锁掷酵母中圆酵母素稳定性的研究[J]. 食品工业科技, 2014, (04): 135-139. DOI: 10.13386/j.issn1002-0306.2014.04.004 |
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| 作者姓名： | 施秋妤 汪何雅 钱和 |
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| 作者单位： | 1.江南大学食品学院 |
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| 摘 要： | 研究了锁掷酵母中圆酵母素的稳定性,以色素保留率和其全反式构型百分含量为指标,测定了其在光照、空气及温度条件下的变化。结果表明,随着温度升高,圆酵母素损失加剧,温度在80~121℃范围时,褪色加快,此时50%~90%的全反式构型向顺式结构转变;色素在光照条件下很不稳定,阳光直射时色素氧化降解迅速;充入空气贮存7d后,90%的圆酵母素发生氧化降解,但其对圆酵母素保留率的影响大于对其反式构型含量的影响。进一步得出,光、温度和空气对圆酵母素的保留率和全反式构型的影响变化趋势一致,光和温度对色素全反式构型影响较大,圆酵母素的异构化主要受光和温度影响。
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| 关 键 词： | 锁掷酵母 圆酵母素 几何异构体 稳定性 |
| 收稿时间： | 2013-07-05 |
Study on the stability of torulene from Sporidiobolus pararoseus |
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| SHI Qiu-yu, WANG He-ya, QIAN He. Study on the stability of torulene from Sporidiobolus pararoseus[J]. Science and Technology of Food Industry, 2014, (04): 135-139. DOI: 10.13386/j.issn1002-0306.2014.04.004 |
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| Authors: | SHI Qiu-yu WANG He-ya QIAN He |
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| Affiliation: | 1.School of Food Science and Technology, Jiangnan University |
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| Abstract: | The torulene stability from Sporidiobolus pararoseus was studied in this paper. The retention rate of total torulene and percent of all-trans torulene among torulene geometrical isomers were determined under different conditions, such as light, oxygen and temperature. The results showed that torulene had a great loss with the increasing temperature and faded intensified when the temperature reached 80 121℃ and about percent of 50 to 70 of total all-trans torulene configuration gradually transformed to cis-torulene isomers at that time;Torulene was quite unstable under light and degraded rapidly especially in direct sunlight;Percent of 90 torulene experienced oxidation and degradation after storage for a week filled with air which had an insignificant effect on the percentage of all-trans configuration of torulene. We have further concluded that light, oxygen and temperature had the same trend on the effect of total torulene retention rate and all- trans torulene relative percentage, and torulene isomerization was mainly affected by light and temperature. |
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| Keywords: | Sporidiobolus pararoseus torulene geometrical isomers stability |
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