Effects of L-arginine and Aloe vera gel edible coatings on the storage life of Khassui dates

Document Type : Original Article

Authors

1 M.Sc. student, Department of Agricultural Engineering, Faculty of Agriculture and Natural Resources, University of Hormozgan, Bandar Abbas, Iran.

2 Assistant Professor, Department Horticulture, College of Agriculture, Hormozgan University, Hormozgan, Hormozgan province, Iran.

3 Researcher, Agronomy and Horticulture Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Bandar Abbas, Iran.

10.30466/rip.2022.54338.1249

Abstract

This study investigated the effects of L-arginine and Aloe vera edible coatings on the maintenance of the appearance and quality of semi-dried Khassui dates during storage. The experiment was conducted using a factorial arrangement in a completely randomized design. The first factor consisted of seven treatments: an untreated control, three L-arginine concentrations (1, 2, and 5 mM), and three Aloe vera gel concentrations (25%, 50%, and 75%). The second factor was storage duration, with measurements taken over nine months. At each sampling time, the following traits were evaluated: weight loss percentage, total soluble solids (TSS), pH, titratable acidity, total phenolic content, flavonoid content, color parameters (L*, a*, and b*), and antioxidant capacity. The lowest weight loss was recorded in dates treated with 1 mM L-arginine. Flavonoid and phenolic contents decreased significantly over time. After nine months of storage, the highest flavonoid content was observed in dates treated with 75% Aloe vera gel. The antioxidant content of the dates also declined significantly as storage duration increased, whereas the treatments had no significant effect on this parameter. In the seventh month of storage, TSS differed significantly between dates treated with L-arginine and the untreated control. The L* value increased gradually during storage, but the treatments did not significantly affect this parameter. Overall, 1 mM L-arginine and 75% Aloe vera gel were more effective than the other treatments in maintaining the quantitative and qualitative characteristics of the dates.

Keywords

References

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Research in Pomology
Volume 8, Issue 2
March 2024
Pages 191-204

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