Vol. 11, Issue 9 (2022)

Author(s):
Nisarga DD, Patel VK and Amarjeet STH

Abstract:
Being a climacteric fruit, guava increases the rate of ripening after harvest which leads to perishable during storage and have a very short shelf life. An investigation was framed to determine the effect ethylene absorbent with and without carrier materials on biochemical composition of Guava (Psidium guajava L.) cv. Allahabad Safeda during the storage period. The experiment was conducted at Department of Horticulture, Anand Agricultural University, Anand during the month of January, 2022. The treatments comprised of 10 different combinations of ethylene absorbent (KMnO₄) with and without carrier materials. The experiment was laid out in Completely Randomized Design with 3 repetitions. Periodical observation was taken at initial, 3^rd, 5^th, 7^th and 9^th day after storage (DAS). The results revealed that treatment T6 [Kaolin + KMnO₄ (20 g)] was recorded best in terms of quality conservation and it was at par with the treatment T3 [Talc + KMnO₄ (20 g)]. Total soluble solids (TSS) and total sugar contents was found increased up to 5^th DAS in T6 and T3 but in others treatments gradually deceased from the 3^rd DAS. In case of acidity, ascorbic acid and phenol content progressively decreased after harvesting. However, significantly maximum ascorbic acid and numerically higher acidity and phenol content were maintained in T6 followed by T3. At 9^th DAS, significantly higher TSS (7.93 ºBrix), acidity (0.35 %), ascorbic acid (138.14 mg/100 g), total sugar (6.41 %), reducing sugar (3.49 %), non-reducing sugar (2.92 %) was registered under the treatment T6 while total phenol (37.22 mg/100 g) was recorded maximum in T3 which rightly reflects to the prolongation of shelf life of guava.