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Type: Artigo de periódico
Title: Carbohydrate content and metabolism as related to maturity and chilling sensitivity of cv. Fortune mandarins
Author: Holland, N
Sala, JM
Menezes, HC
Lafuente, MT
Abstract: Fruits of cv. Fortune mandarin were periodically :harvested throughout the ripening period to evaluate changes in carbohydrate content and metabolism in flavedo tissue and to determine the potential role of carbohydrates in the tolerance of citrus fruit to chilling injury (CI). Sucrose showed little change in the flavedo during the season, but fructose and glucose increased, in nearly equal amounts, throughout the fall and winter, reaching a maximum in January. Starch levels were less abundant than soluble carbohydrates and rose continuously until March. Sucrose phosphate synthase (SPS; EC 4.1.14) activity decreased from December throughout ripening. Changes in sucrose synthase (SS; EC and acid and alkaline invertase (Inv; EC activities correlated with changes in the reducing sugars, but acid invertase was less active than the other sucrose-metabolizing enzymes. Carbohydrate changes in the flavedo of Fortune mandarins with fruit maturity appear not to be related to the chilling tolerance of fruits during cold storage.
Subject: acid and alkaline invertase
chilling injury
sucrose phosphate synthase
sucrose synthase
Country: EUA
Editor: Amer Chemical Soc
Citation: Journal Of Agricultural And Food Chemistry. Amer Chemical Soc, v. 47, n. 7, n. 2513, n. 2518, 1999.
Rights: fechado
Identifier DOI: 10.1021/jf981402h
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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