4.7 Article

Non-destructive determination of fatty acid composition of in-shell and shelled almonds using handheld NIRS sensors

期刊

POSTHARVEST BIOLOGY AND TECHNOLOGY
卷 174, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.postharvbio.2020.111459

关键词

Almonds; In situ analysis; NIRS sensors; Fatty acid profile; Quality; Shelf life determination

资金

  1. Desarrollo y Aplicaciones Fitotecnicas, S. A., DAFISA [P12018024]

向作者/读者索取更多资源

This research utilized near infrared spectroscopy to measure the fatty acid profile in almonds, with better results found in shelled almonds analyzed in dynamic mode.
One of the major compounds in almond kernels, which determines their nutritional quality, are lipids. The aim of this research was to determine the fatty acid profile in intact in-shell and shelled almonds (145 samples) using two new generation handheld near infrared spectroscopy (NIRS) sensors, of different optical design and technical specifications, adapted for in situ analysis in different stages in the food supply chain: in the industry after harvest, at the reception points and during postharvest storage. For both instruments, two procedures for taking near infrared (NIR) spectra were tested: (1) static, where point spectral readings were taken of almonds placed on trays; (2) dynamic, where spectra were taken by scanning the entire trays. Modified partial least squares (MPLS) regression models were developed using NIR spectra with different combinations of signal pre-treatments - derivative and scatter correction methods. The residual predictive deviation for cross validation (RPDcv) of the best models developed for the prediction of palmitic, stearic, oleic, and linoleic acids using shelled almonds were 2.40, 2.16, 3.98, and 3.77, respectively, and 1.73, 1.73, 2.02, and 2.11 for the in-shell almonds. These results confirm the feasibility of NIRS technology to measure the fatty acid profile in in-shell and shelled almonds. A comparison between the presentation mode (in-shell or shelled) and analysis mode (static or dynamic) showed that the best results were obtained for shelled almonds analysed in dynamic mode.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据