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	Research on Overall Assessment of Royal Jelly Freshness by FTIR Spectroscopy
	Wu Li-ming ; Zhou Qun ; Zhao Jing ; Sun Su qin ; Hu Fu liang
	2010-10-12 ; 2010-10-12
关键词	FTIR Royal jelly Freshness Storage ORGANIC-MATTER Spectroscopy
中文摘要	Fourier transform infrared spectra (FTIR) of royal jelly (RJ) stored at different temperature and after different storage periods were measured, a series of correlation analysis among the spectra were carried out by using the spectra of new harvested RJ as a standard. The results showed that the correlation coefficient of amide band I and the relative intensity ratios of I-1 (647)/I-1 (541), I-1 (647)/I-1 (409), I-1 (647)/I-1 (657) and I-1 (647)/I-1 (054) of RJ samples' spectra decreased with extension of storage time and temperature, and existed good linear correlations with the storage time, with the order of their change extent being 28 degrees C>16 degrees C>4 degrees C >-18 degrees C. According to the spectra change laws and practical experiences of RJ storage, the correlation coefficient of amide band I and four relative intensity ratios I-1 (641)/I-1 (641), I-1 (641)/I-1 (409), I-1 (647)/I-1 (657) and I-1 (617)/I-1 (651) were selected as assessment indexes of RJ freshness. The threshold value of correlation coefficient was set to be 0.910 0, and the threshold values of the four relative intensity ratios were set to be 1.744, 2.430, 3.345 and 1.412 respectively. Once one or more indexes are lower than the corresponding threshold values, the RJ sample can be considered as a stale sample. So, FTIR spectroscopy combined with several dates processing methods would be an effective method for overall assessing the freshness of RJ.
语种	中文 ; 中文
出版者	OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS ; BEIJING ; NO 76 COLLAGE SOUTH RD BEIJING, BEIJING 100081, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81015]
专题	清华大学
推荐引用方式 GB/T 7714	Wu Li-ming,Zhou Qun,Zhao Jing,et al. Research on Overall Assessment of Royal Jelly Freshness by FTIR Spectroscopy[J],2010, 2010.
APA	Wu Li-ming,Zhou Qun,Zhao Jing,Sun Su qin,&Hu Fu liang.(2010).Research on Overall Assessment of Royal Jelly Freshness by FTIR Spectroscopy..
MLA	Wu Li-ming,et al."Research on Overall Assessment of Royal Jelly Freshness by FTIR Spectroscopy".(2010).

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