Fruit Quality, Antioxidant Contents and Activity, and Antiproliferative Activity of Strawberry Fruit Stored in Elevated CO₂ Atmospheres

• Published in: Journal of food science Vol. 73; no. 6; pp. S339 - S344
• Main Authors: Shin, Y, Ryu, J.A, Liu, R.H, Nock, J.F, Polar-Cabrera, K, Watkins, C.B
• Format: Journal Article
• Language: English
• Published: Malden, USA Blackwell Publishing Inc 01-08-2008; Institute of Food Technologists
• Subjects: anthocyanins; Anthocyanins - analysis; anticarcinogenic activity; antioxidant activity; antioxidants; Antioxidants - analysis; Antioxidants - metabolism; antiproliferative activity; ascorbic acid; Ascorbic Acid - analysis; Biological and medical sciences; Carbon Dioxide; Carcinoma, Hepatocellular - pathology; Cell Division - drug effects; cell proliferation; Color; controlled atmosphere; controlled atmosphere storage; cultivars; cultured cells; dehydroascorbic acid; firmness; flavonoids; Flavonoids - analysis; Food industries; Food Packaging - methods; Food Preservation - methods; food storage; Fragaria; Fragaria ananassa; Fruit - standards; Fruit and vegetable industries; fruit composition; fruit quality; Fundamental and applied biological sciences. Psychology; Humans; Hydroxybenzoates - analysis; liver neoplasms; Liver Neoplasms - pathology; phenolic compounds; Plant Extracts - chemistry; Plant Extracts - pharmacology; strawberries; strawberry; Temperature; temporal variation; Time Factors; Tumor Cells, Cultured; Antineoplastic agent; Fruit; Strawberry; Quality; antisproliferative activity; Antioxidant; Controlled atmosphere; antioxidant activity; fruit quality
• ISSN: 0022-1147; 1750-3841
• DOI: 10.1111/j.1750-3841.2008.00857.x

The effects of CO₂ in the storage atmosphere on color, firmness, ascorbic acid (AA), anthocyanins, flavonoids, phenolics, total antioxidant activity, and antiproliferative activity of strawberry fruit have been investigated. "Northeaster" and "Earliglow" strawberries were stored in air or in 20% CO₂ (in air) at 3 °C for 20 d. Color changes in Northeaster were delayed more by CO₂ treatment than in Earliglow. Firmness of CO₂-stored fruit increased slightly compared with those stored in air. The increases in total and reduced AA concentrations during air storage were usually prevented by CO₂ storage in both cultivars. Dehydroascorbic acid (DHA) concentrations increased during CO₂ storage. Anthocyanins and flavonoids, and total antioxidant activity of both cultivars were higher in air-stored fruit than in CO₂-stored fruit. The total phenolic concentration was lower in CO₂-stored Earliglow fruit than in air, but storage treatment did not affect that of Northeaster. A 40 mg/mL concentration of Northeaster strawberry extract inhibited about 80% of HepG₂ human liver cancer cell proliferation. CO₂ treatment did not affect the antiproliferative activity of strawberry fruits, but antiproliferative activity was greater at harvest than after storage.