Residues of free and bound maleic hydrazide in potato tubers

Autor:	Harry J. Duncan, A. I. Dias
Rok vydání:	1999
Předmět:	Residue (complex analysis) biology Tubercle Chemistry biology.organism_classification Hydrazide High-performance liquid chromatography chemistry.chemical_compound Botany Postharvest Acid hydrolysis Food science Agronomy and Crop Science After treatment Solanaceae Food Science
Zdroj:	Potato Research. 42:89-93
ISSN:	1871-4528 0014-3065
DOI:	10.1007/bf02358394
Popis:	The method of Vadukul (1991) for determining maleic hydrazide (MH) was modified and gave recoveries of free MH of 89%±4%. The values recorded on individual tubers ranged from 2–14 mg kg−1. Maleic hydrazide was evenly distributed throughout the tuber (peel, outer and inner flesh) but concentration increased slightly as tuber size increased. The concentration of free MH decreased from 7 to 3 mg kg−1 over the storage period of 5 1/2 months. Acid hydrolysis released substantial amounts of MH particularly from older potatoes (13 mg kg−1) compared with 6 mg kg−1 from new potatoes, implying that free MH is gradually converted to a bound form with time after treatment. No evidence was found for the presence of a β-glucoside of MH.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d9c7a8e36a8bf587449f5ae26cd18c25 https://doi.org/10.1007/bf02358394 Zobrazit plný text záznamu Full text from SpringerLink