## Abstract It is demonstrated using a practical example that indirect detection of ^29^Si NMR signals is sufficiently sensitive in LC–NMR stop‐flow arrangement to analyze mixtures of siloxane polymers. New cryogenic probes with better signal‐to‐noise ratio will turn this version of LC–NMR into a r
Application of LC-NMR to analysis of carotenoids in foods
✍ Scribed by Chisato Tode; Takashi Maoka; Makiko Sugiura
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 357 KB
- Volume
- 32
- Category
- Article
- ISSN
- 1615-9306
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✦ Synopsis
Abstract
LC‐NMR has been applied to componential analysis of carotenoids in several foods, specifically, tomato juice, palm oil, and satsuma mandarin orange juice. The crude carotenoids extracted with organic solvent from these foodstuffs were analyzed after simple pre‐processing. Three, four, and two kinds of carotenoids were identified for tomato juice, palm oil, and satsuma mandarin orange, respectively, primarily by comparing their NMR spectra with those of pure standard.
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