4.7 Article

Compositional changes during guava fruit ripening

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FOOD CHEMISTRY
卷 80, 期 4, 页码 557-563

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ELSEVIER SCI LTD
DOI: 10.1016/S0308-8146(02)00345-X

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guava; compositional changes; fruit ripening

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Compositional changes of fruit pulp and peel during ripening of white- and pink-fleshed guava fruits were studied. The white and pink guava fruits exhibited a typical climacteric pattern of respiration. Fruit tissue firmness decreased progressively, in a similar manner, in both guava fruit types. Total soluble solids (TSS) and total sugars increased in pulp and peel of both guava types with decrease in flesh firmness. More increase in total sugars was observed after the climacteric peak of respiration. Reducing sugars and titratable acidity increased up to the full-ripe stage and then decreased. Ascorbic acid and phenolic compounds decreased continuously during ripening of the two types. The peel showed higher values of ascorbic acid, total protein and phenolic -compounds than the plup. The white-fleshed guavas had higher levels of TSS, total sugars, reducing sugars. titratable acidity, phenolic compounds and ascorbic acid content then the pink-fleshed fruits. (C) 2002 Elsevier Science Ltd. All rights reserved.

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