CHANGES OF SUGARS AND ORGANIC ACIDS CONTENTS IN TWO ASIAN PEAR CULTIVARS (PYRUS SEROTINA REHD.) DURING FRUIT DEVELOPMENT AND POSTHARVEST STORAGE AND ITS EFFECT ON FRUIT SHELF LIFE, QUALITY AND INTERNAL BROWNING DISORDER

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KHOUSH GHALB H.; ARZANI KAZEM; MALAKOUTI M.J.; BARZEGAR MOHSEN

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Journal Paper

Paper Information

Journal: Journal of Water and Soil Science Year:2008 | Volume:12 | Issue:45 (A) Page(s): 193-204

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Title

CHANGES OF SUGARS AND ORGANIC ACIDS CONTENTS IN TWO ASIAN PEAR CULTIVARS (PYRUS SEROTINA REHD.) DURING FRUIT DEVELOPMENT AND POSTHARVEST STORAGE AND ITS EFFECT ON FRUIT SHELF LIFE, QUALITY AND INTERNAL BROWNING DISORDER

Author(s)

KHOUSH GHALB H. | ARZANI KAZEM | MALAKOUTI M.J. | BARZEGAR MOHSEN | Issue Writer Certificate

Keywords

ACIDITYQ2

ASIAN PEARQ3

FIRMNESSQ3

FRUIT PHYSICOCHEMICAL CHARACTERISTICQ3

INTERNAL BROWNINGQ3

TOTAL SOLUBLE SOLIDQ3

Abstract

Changes of the main sugars and organic acids content in ASIAN PEAR (Pyrus serotina Rehd.) Cultivars ‘KS’9 and ‘KS’13 grown in Tehran were studied from fruit set to maturity. The main sugars and organic acids content in fruits were determined 1 and 2 months before harvest, at the time of harvest and 1, 2 months after harvest time using High Performance Liquid Chromatography (HPLC). Fruits were stored at 2oC and 80-85% relative humidity (RH). There were significant differences between cultivars and time of fruit harvest in terms of sugars and organic acids content. In both studied cultivars, fructose, glucose and sorbitol increased from the first fruit sampling to one month after harvest (1 to 9% FW) and then decreased. Sucrose content decreased from 2 months before harvest to 2 months after harvest time (3 to 0.75% FW). In both studied cultivars organic acids content increased at the time of pick-up and then decreased.The highest organic acids contents in the studied cultivars were malic and ascorbic acids (345 and 41.1mg 100g-1FW in ‘KS’9 and control, respectively). The relationship between low sugar and organic acid content in fruits showed the highest correlation (0.8 to 1) in both cultivars among low flesh FIRMNESS, low TOTAL SOLUBLE SOLID (TSS), low dry weight and high INTERNAL BROWNING determined in this study. Results indicated that high content of sugars and organic acids in fruit led to delayed INTERNAL BROWNING. ASIAN PEARs with a low ascorbic acid concentration are probably more susceptible to INTERNAL BROWNING. High correlation was observed between high sugars content and high fruit colour.

Cites

EVALUATION OF FRUIT PHYSICOCHEMICAL PROPERTIES AND QUALITATIVE CHARACTERISTICS OF SOME EUROPEAN PEAR (PYRUS COMMUNIS L.) GENOTYPES

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APA: Copy

KHOUSH GHALB, H., ARZANI, KAZEM, MALAKOUTI, M.J., & BARZEGAR, MOHSEN. (2008). CHANGES OF SUGARS AND ORGANIC ACIDS CONTENTS IN TWO ASIAN PEAR CULTIVARS (PYRUS SEROTINA REHD.) DURING FRUIT DEVELOPMENT AND POSTHARVEST STORAGE AND ITS EFFECT ON FRUIT SHELF LIFE, QUALITY AND INTERNAL BROWNING DISORDER. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 12(45 (A)), 193-204. SID. https://sid.ir/paper/14798/en

Vancouver: Copy

KHOUSH GHALB H., ARZANI KAZEM, MALAKOUTI M.J., BARZEGAR MOHSEN. CHANGES OF SUGARS AND ORGANIC ACIDS CONTENTS IN TWO ASIAN PEAR CULTIVARS (PYRUS SEROTINA REHD.) DURING FRUIT DEVELOPMENT AND POSTHARVEST STORAGE AND ITS EFFECT ON FRUIT SHELF LIFE, QUALITY AND INTERNAL BROWNING DISORDER. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2008;12(45 (A)):193-204. Available from: https://sid.ir/paper/14798/en

IEEE: Copy

H. KHOUSH GHALB, KAZEM ARZANI, M.J. MALAKOUTI, and MOHSEN BARZEGAR, “CHANGES OF SUGARS AND ORGANIC ACIDS CONTENTS IN TWO ASIAN PEAR CULTIVARS (PYRUS SEROTINA REHD.) DURING FRUIT DEVELOPMENT AND POSTHARVEST STORAGE AND ITS EFFECT ON FRUIT SHELF LIFE, QUALITY AND INTERNAL BROWNING DISORDER,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 12, no. 45 (A), pp. 193–204, 2008, [Online]. Available: https://sid.ir/paper/14798/en

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