The relationship between glucosinolates and the sensory characteristics of steamed-pureed turnip (Brassica rapa subsp. rapa)

Diana Mohd Nor, N., Lignou, S. ORCID: https://orcid.org/0000-0001-6971-2258, Bell, L. ORCID: https://orcid.org/0000-0003-2895-2030, Houston-Price, C. ORCID: https://orcid.org/0000-0001-6368-142X, Harvey, K. ORCID: https://orcid.org/0000-0002-6819-0934 and Methven, L. (2020) The relationship between glucosinolates and the sensory characteristics of steamed-pureed turnip (Brassica rapa subsp. rapa). Foods, 9 (11). 1719. ISSN 2304-8158 doi: 10.3390/foods9111719

Abstract/Summary

Glucosinolates (GSLs) are phytochemical compounds that can be found in Brassica vegetables. Seven separate batches of steamed-pureed turnip were assessed for GSL content using liquid chromatography mass spectrometry (LC-MS) and for sensory attributes by sensory profiling (carried out by a trained sensory panel). Twelve individual GSLs which included 7 aliphatic, 4 indole and 1 arylaliphatic GSL, were identified across all batches. There were significant differences in individual GSL content between batches, with gluconasturtiin as the most abundant GSL. The total GSL content ranged from 16.07 to 44.74 μmol g-1 dry weight (DW). Sensory profiling concluded there were positive correlations between GSLs and bitter taste, and negative correlations between GSLs (except glucobrassicanapin) and sweet taste. The batches, which had been purchased across different seasons, all led to cooked turnip that contained substantial levels of GSLs which were subsequently all rated as bitter.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/94465
Identification Number/DOI	10.3390/foods9111719
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Food Research Group
Publisher	MDPI
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