Use of Aqueous Extract of Matcha Tea as an Antioxidant in Poultry Meat Storage

Abstract

This study aimed to evaluate the effect of aqueous extract of matcha tea on the oxidation of fats, and some traits of poultry breast meat kept in cool storage. The study included six treatments: T1 control, T2 distilled water, T3 matcha tea 0.5%, T4 macha tea 1.0%, T5 macha tea 1.5% and T6 industrial antioxidant BHA. Pieces (2 × 3 cm) of the breasts were fleshed with the aforementioned solutions and stored by refrigeration, and some physiochemical, and chemical tests were conducted every 3 days. The results of GC-MS examination of the aqueous extract of matcha tea showed the presence of some active compounds in large amounts, and caffeine represented 81.78% of them. The results of pH values and water holding capacity showed a significant decrease (P ≤ 0.05) in submerged breast meat cuttings in aqueous extract of matcha tea at concentrations (0.5, 1.0, 1.5%) with a clear superiority for treatment T4 (1%) in the pH values and water holding capacity, as compared with the control sample. Treatments with aqueous extract of macha tea (T3, T4, T5) showed significant decreases (P ≤ 0.05) in the oxidation indicators, and a superiority in TBA and peroxide values were observed for treatment T4 upon all treatments except the industrial antioxidant (T6), as well as the values of free fatty acids which were decreased. Values of volatile nitrogen in the cold stored chicken breast meat showed that the values of T4 treatment were the closest to the results of the industrial antioxidant treatment.