Browsing by Author "Athira M Nair."

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    Quality evaluation and postharvest management of Annona SPP.
    (Department of Postharvest Management, College of Agriculture , Vellayani, 2024-03-06) Athira M Nair.; Geetha Lekshmi, P R
    The present study entitled ‘Quality evaluation and postharvest management of Annona spp.’ was conducted at Department of Postharvest Management, College of Agriculture, Vellayani during the year 2018-2021 with the objective to evaluate the quality parameters of major Annona spp. of Kerala (Annona squamosa L., Annona reticulata L. and Annona muricata L.), standardization of postharvest management practices and storage stability studies of fruit pulp. The present study revealed that different Annona spp. viz., A. squamosa L., A. reticulata L. and A. muricata L. exhibited variations in physical, physiological, biochemical, and organoleptic parameters during different ripening stages. The postharvest treatment of A. squamosa L. and A. reticulata L. fruits with 50 ppm Benzyl Adenine and A. muricata L. fruits with 2 mM Salicylic Acid as dipping for 10 minutes were standardized as the best postharvest treatments for delayed ripening and extended shelf life. The shrink wrapping (15 μ polyolefin film) of postharvest treated fruits of Annona spp. was found as the best prepackaging with extended shelf life of 13.51 days, 9.15 days and 11.75 days under room temperature storage for A. squamosa L., A. reticulata L. and A. muricata L. respectively. The pulp preservation studies revealed that fruit pulp of A. squamosa L. treated with 0.5 % citric acid, 0.5 % ascorbic acid and 1000 ppm sulphur dioxide, A. reticulata L. pulp treated with 0.5 % citric acid, 0.5 % ascorbic acid and 300 ppm sorbic acid and A. muricata L., pulp treated with 0.5 % ascorbic acid and 300 ppm sorbic acid could be stored under refrigerated condition for six months with lower changes in quality parameters. The freeze dried pulp of A. squamosa L., A. reticulata L. and A. muricata L. stored in laminated aluminium pouches (100 μ) was found stable at refrigerated condition for six months without loss in quality