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Food Composition and Analysis

Stability of carotenoids and tocopherols in ready-to-eat baby-leaf lettuce and salad rocket during low-temperature storage

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Pages 489-495 | Received 22 Dec 2015, Accepted 25 Mar 2016, Published online: 13 Apr 2016
 

Abstract

Minimally processed ready-to-eat baby-leaf vegetables (BLVs) are the most convenient source to include the health beneficial bioactive in the daily diet. In the present study, the visual quality and storage stability of carotenoids, tocopherols were investigated in lettuce (green and red romaine) and salad rocket BLVs. The commercially packed samples of BLVs were stored at 0 °C and 4 °C in dark conditions and analyzed after 0, 2, 4, 8 and 12 days of storage. All the studied samples were found in better visual quality up to eight days of storage at both the temperatures. In most cases, the quality was correlated with the chlorophyll contents. The highest significant (p < 0.05) positive changes in total carotenoids and tocopherols were observed in samples stored at 4 °C. Also, carotenoids and tocopherols are maximum stable in green and red romaine lettuce, respectively.

Disclosure statement

The authors have declared that there is no conflict of interest.

Funding information

This paper was supported by KU research professor program of Konkuk University, Seoul, Republic of Korea. Also, financial support from export promotion technology development program, the ministry of agriculture, food and rural affairs, Republic of Korea is highly acknowledged.

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