The influences of storage temperature on quality parameters, comprising total soluble solids (TSS), free
sugars, vitamin C, titratable acidity (TA) and soluble proteins, and internal browning (IB) of summer
pineapple (Ananas comosus L. cv. ‘Comte de Paris’) fruit were investigated. The fruit were subjected to
three different temperatures (6, 10 and 25 ◦C) with relative humidity of 80% for 24 days. In addition,
the activities of polyphenol oxidase (PPO), peroxidase (POD) and catalase (CAT) were measured during
storage. The results indicated that a decrease in TSS in fruit kept at 25 ◦C was noted, while TSS remained
relatively constant in fruit storage temperature at 10 and 6 ◦C. A high correlation was observed between
the different sugars during storage periods. There was a noticeable decline in sucrose content in pineapple
fruit during storage, with a more rapid decrease with higher temperature. The maximum retentions of
glucose and fructose concentrations can be achieved with storage of fruit at 6 ◦C rather than storage at
10 or 25 ◦C. The effective slowing down of vitamin C and TA rate of decreases was the fruit stored at 6 ◦C,
followed by 10 and 25 ◦C. There was a decrease in contents of soluble proteins as storage temperature
increased throughout the storage period, and significant differences were found between fruit stored
at low temperature and room temperature after 12 d in storage. Storage temperature also significantly
affected IB development, the incidence of IB was more rapid and with higher intensity in fruit held at
25 ◦C than 10 ◦C, and IB intensity was minimal in fruit held at 6 ◦C. Additionally, PPO activity increased
with higher storage temperature during 24 days storage. CAT activity gradually increased at three storage
temperatures and in the fruit stored at 25 ◦C was higher than those at 10 and 6 ◦C. However, POD activity
was not influenced by storage condition. The results suggest that lower temperature can provide a useful
means of maintaining quality and resist IB development during storage of pineapple fruit
The influences of storage temperature on quality parameters, comprising total soluble solids (TSS), free
sugars, vitamin C, titratable acidity (TA) and soluble proteins, and internal browning (IB) of summer
pineapple (Ananas comosus L. cv. ‘Comte de Paris’) fruit were investigated. The fruit were subjected to
three different temperatures (6, 10 and 25 ◦C) with relative humidity of 80% for 24 days. In addition,
the activities of polyphenol oxidase (PPO), peroxidase (POD) and catalase (CAT) were measured during
storage. The results indicated that a decrease in TSS in fruit kept at 25 ◦C was noted, while TSS remained
relatively constant in fruit storage temperature at 10 and 6 ◦C. A high correlation was observed between
the different sugars during storage periods. There was a noticeable decline in sucrose content in pineapple
fruit during storage, with a more rapid decrease with higher temperature. The maximum retentions of
glucose and fructose concentrations can be achieved with storage of fruit at 6 ◦C rather than storage at
10 or 25 ◦C. The effective slowing down of vitamin C and TA rate of decreases was the fruit stored at 6 ◦C,
followed by 10 and 25 ◦C. There was a decrease in contents of soluble proteins as storage temperature
increased throughout the storage period, and significant differences were found between fruit stored
at low temperature and room temperature after 12 d in storage. Storage temperature also significantly
affected IB development, the incidence of IB was more rapid and with higher intensity in fruit held at
25 ◦C than 10 ◦C, and IB intensity was minimal in fruit held at 6 ◦C. Additionally, PPO activity increased
with higher storage temperature during 24 days storage. CAT activity gradually increased at three storage
temperatures and in the fruit stored at 25 ◦C was higher than those at 10 and 6 ◦C. However, POD activity
was not influenced by storage condition. The results suggest that lower temperature can provide a useful
means of maintaining quality and resist IB development during storage of pineapple fruit
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