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鲜牛奶变质过程的激光诱导荧光光谱研究 被引量:11

Study on the Deteriorating Course of Fresh Milk by Laser-induced Fluorescence Spectra
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摘要 本文用激光诱导荧光 (LIF)方法对鲜牛奶和酸牛奶变质过程进行了荧光光谱研究 ,介绍了所用测试系统的组成及测试方法 ,给出了变质过程的荧光光谱 ,并对测试结果进行了分析 ,研究表明 。 Along with the development of living standard, people′s demand for food quality and food hygiene also rises. People demand food not only with rich nutrition, inexpensive price, but also with safety. So food hygiene test is paid common attention of society. Milk is a nourishing food and is loved by people. Sour milk goods from milk is also in great demand. But nourishing foods are good for growing many microbes. Fresh milk and sour milk are easy contaminated by microbes and go bad. Laser induced fluorescence (LIF) technology is an important part of modern optics. It is broadly applied in biomedicine, diagnostics, test of food hygiene, environment protecting, owing to its high sensitivity, high speed, automation, untouched testing. In this paper, we attempted to LIF technology to test milk food quality. We used the third harmonics pulsed Nd:YAG laser (355 nm) as the exciting source ,and a multi track spectrometer as the detector and measured the intensities of apply LIF of fresh milk and sour milk during their deteriorating course. Test system and test method are introduced, fluorescence spectra of deteriorating course are also attached. The test result makes clear that there are close connection between deteriorating course and fluorescence spectra.
出处 《光谱学与光谱分析》 SCIE EI CAS CSCD 北大核心 2001年第6期769-771,共3页 Spectroscopy and Spectral Analysis
关键词 食品卫生 鲜牛奶 荧光光谱 食品检验 酸牛奶 变质过程 激光诱导荧光 Food hygiene Fresh milk Fluorescence spectra
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参考文献5

  • 1杨洁彬 李淑高 等.食品微生物学[M].北京:北京农业大学出版社,1999..
  • 2张雁.激光诱导荧光光谱法用于肺癌诊断的研究.北京理工大学硕士学位论文[M].,2000..
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  • 4杨洁彬,食品微生物学,1999年
  • 5苏世彦,食品微生物检验手册,1998年

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