| Effects of wax coatings and postharvest storage on sensory quality and aroma volatile composition of 'Mor' mandarins. | |
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MedLine Citation:
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PMID: 20355140 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Mandarins suffer from accumulation of off-flavours after harvest. In this study the sensory quality and aroma profile composition of homogenised segments of untreated (control) and wax-coated 'Mor' mandarins after 7 days at 20 degrees C or 3 or 6 weeks of cold storage at 5 degrees C were examined. RESULTS: Fruit taste score decreased during storage and following wax coating, and this was attributed to decreases in sourness and mandarin flavour and accumulation of off-flavours. Aroma profiling identified 31 volatiles that decreased by at least 50% during storage and after waxing and thus may be involved in the observed flavour loss. In contrast, 13 volatiles, mostly belonging to ethanol fermentation and fatty acid and amino acid catabolism pathways, significantly increased at least twofold and probably contributed to off-flavour enhancement. CONCLUSION: The results showed that after harvest there was a progressive decrease in sensory quality of 'Mor' mandarins. It is proposed that observed decreases in contents of sesqui- and monoterpenes and short-chain oxygenated fatty acids may contribute to the decrease in mandarin flavour, whereas increases in the contents of ethanol fermentation metabolites and derivates of fatty acid and amino acid catabolism are most likely involved in causing the enhanced sensation of off-flavours. |
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Authors:
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Zipora Tietel; Einat Bar; Efraim Lewinsohn; Ester Feldmesser; Elazar Fallik; Ron Porat |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of the science of food and agriculture Volume: 90 ISSN: 1097-0010 ISO Abbreviation: J. Sci. Food Agric. Publication Date: 2010 Apr |
Date Detail:
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Created Date: 2010-03-31 Completed Date: 2010-09-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0376334 Medline TA: J Sci Food Agric Country: England |
Other Details:
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Languages: eng Pagination: 995-1007 Citation Subset: IM |
Affiliation:
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Department of Postharvest Science of Fresh Produce, ARO, The Volcani Center, PO Box 6, Bet Dagan 50250, Israel. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Citrus / chemistry* Female Food Handling / methods* Fruit / chemistry*, standards Humans Male Metabolic Networks and Pathways Middle Aged Odors* Taste* Volatile Organic Compounds / analysis* Volatilization Waxes* |
| Chemical | |
Reg. No./Substance:
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0/Volatile Organic Compounds; 0/Waxes |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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