Journal of Food, Agriculture and Environment

Effects of post-harvest cooling delay on weight loss, soluble solid and ascorbic acid contents of strawberry fruit

Author(s):

Hiroaki Kitazawa ¹*, Tatsuo Sato ², Nobutaka Nakamura ¹, Satoru Motoki ³

Recieved Date: 2013-05-12, Accepted Date: 2013-10-20

Abstract:

Strawberry is one of the most popular fruits worldwide.Therefore, it is important to consider the stability of fruit supply and maintenance of freshness from the production area to the point of consumption. Because harvested strawberries deteriorate rapidly, post-harvest cooling delays (CD) may induce quality changes. However, little is known about the effect of CD on the changes in fruit quality. Thus, in this study, we investigated the effects of post-harvest CD on the weight loss and soluble solid and ascorbic acid contents (SSC and AAC, respectively) in strawberry. In addition, we simulated the relationship between changes in AAC and cumulative respiration rate (CRR), which is considered related to the reduction in AAC. Harvested fruit were placed in a chamber maintained at 20°C for 0, 4, 8, 12, 16, 20, and 24 h as CD treatments. After the CD treatment, each fruit was moved to a chamber maintained at 5°C for 3 days. Although a high correlation was found between the duration of CD and weight loss, serious water loss related directly that corresponds to reduction in commercial value was not observed. The CD treatment at 20°C for 16–24 h induced a decline in AAC during 3 days of storage, although it did not affect the SSC. In a simulation of the relationship between the change in AAC and CRR, we found a threshold value of CRR that induced a decline of AAC, suggesting that CRR could be used to predict whether AAC decreased after a particular CD time. Thus, for strawberry, we suggested that the maximum acceptable duration of post-harvest CD would be 12 h, with respect to decline in AAC. Moreover, we found that the reduction in AAC could be predicted by measuring the CRR. This finding would be useful for the management and improvement of temperature condition for fresh strawberries from harvest to distribution.

Keywords:

Strawberry, cooling delay, ascorbic acid, respiration rate, soluble solids content, weight loss

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Food and Health
Pages: 372-376

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