The Effect of Putrescine and Modified Atmosphere Packaging (MAP) Treatments on Fruit Quality Characteristics of Strawberry (Kabarla cultivar) During Cold Storage - [2]

Abstract

Strawberry is a fruit species that must be harvested at full ripening and at the same time has an extremely short shelf life and deteriorates rapidly. Therefore

it is important to extend the shelf life after harvest. In this study

putrescine and modified atmosphere packaging (MAP) were applied during cold storage in order to maintain the quality and extend the shelf life of strawberry fruit. The commercial ripening fruit were treated with 1 mM putrescine and stored in MAP for 20 days. The quality characteristics such as weight loss

soluble solids content

titratable acidity

fruit color

organic acid and phenolic content were measured and analyzed on days 4

8

12

16 and 20 of storage. At the end of 20 days of the cold storage

the highest weight loss was in control treatment (%). The decrease in soluble solids content (SSC) and titratable acidity (TA) values during cold storage was slowed down by MAP and putrescine treatments. Organic acids and phenolic compounds were significantly affected by storage time and MAP and putrescine treatments. After 20 days of the cold storage

citric acid (748.91 mg 100 g -1) and malic acid (258.34 mg 100 g-1)

which were determined as basic organic acids

were highest in putrescine treatment. Shikimic acid (0.77 mg 100 g-1) and isocitric acid (112.58 mg 100 g-1) as phenolic compounds were highest in MAP and MAP+ putrescine treatments

respectively. These results releaved that the application of putrescine and modified atmosphere packaging (MAP) during cold storage significantly extends the market life of strawberries by preserving their quality attributes.