EVALUATION OF PRE AND POST HARVEST TREATMENTS AND PACKAGING FOR IMPROVEMENT OF SHELF LIFE IN GUAVA (Psidium guajava L.)

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dc.contributor.advisorJHOLGIKER, PRAVEEN.
dc.contributor.advisorNAIK, RAMACHANDRA K.
dc.contributor.authorREVANKAR, VIVEK ANANT.
dc.contributor.otherKUKANOOR, LAXMAN.
dc.contributor.otherK. S., THIPPANNA
dc.contributor.otherPATIL, GANESHGOUDA I.
dc.date.accessioned2023-07-10T11:21:29Z
dc.date.available2023-07-10T11:21:29Z
dc.date.issued2020-11
dc.description.abstractAn experiment entitled “Evaluation of pre and post-harvest treatments and packaging for improvement of shelf life in guava (Psidium guajava L.)” was carried out in the department of Post Harvest Technology, KRCCH Arabhavi and Department of Fruit Science, COH, Bidar, Karnataka during the year of 2018-19. Fruits harvested from pre harvest sprayed guava trees with various compounds viz., calcium nitrate (0.5 and 1%), n-Propyl gallate (200 and 300ppm), salicylic acid (0.4 and 0.6%) and hexanal (1 and 2%) were analyzed for various physical, physiological and biochemical qualities under ambient storage condition. Among the treatments, fruits under T5 (300 ppm n-Propyl gallate) recorded minimum physiological loss in weight (5.09%), respiration rate (43.46 mgCO2/kg/hr) and maintained maximum mean firmness (17.14N), total soluble solids (10.26 oB), ascorbic acid (184.79 mg/100g), total sugars (7.38%) and extended the shelf life up to 8 days. Whereas, fruits under T7 (0.6% salicylic acid) recorded minimum marketability (22.69%), shelf life (1.69) and obtained lowest score for overall acceptability (3.50) than compared to other treatments. Guava fruits of uniform size, harvested at firm mature stage were washed with clean water and dipped in aqueous solutions of different compounds viz., calcium nitrate (0.5 and 1%), Carboxymethyl cellulose (0.5 and 1%) and hexanal (1 and 2%) and assessed for physical, physiological and organoleptic qualities under ambient storage condition. Fruits dipped in 2 per cent hexanal (T7) maintained maximum mean firmness (13.57 N), total soluble solids (10.19 oB), total sugars (7.50), color and appearance (7.63) and recorded maximum marketability of fruits and extended shelf life up to 8.00 days. Whereas, control fruits remained fresh and lasted for 4 days. Freshly harvested guava fruits were washed in clean water and packed in different packaging materials namely; crates (control), LDPE (150gauge) bags, CFB boxes, Cling wrap and cling wrap+ CFB were assessed for physiological and organoleptic qualities under ambient and cold storage condition. Fruits wrapped in cling film and then packed CFB box (T5) was found to be superior over other treatments in both the storage conditions. Fruits under T5 registered minimum physiological loss in weight (3.25 and 2.72 %), respiration rate (40.85 and 30.18 mgCO2/kg/hr) and maintained maximum mean values of firmness (14.59 and 13.38), total soluble solids (9.80 and 10.04 oB), ascorbic acid (186.05 and 185.15 mg/100gm), obtained highest score for overall acceptability (6.97 and 6.87) and remained fresh up to 8.3 and 14.67 days in ambient and cold storage condition respectively.en_US
dc.identifier.otherUHS18PGM1021
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810198089
dc.keywordsHorticulture, Post Harvest Technology, Guava, Harvest, Shelf Life, Ambient, Carboxymethyl, Organoleptic, Cellulose, Calcium Nitrate, Soluble Solids, Ascorbic Acid, Physical, Physiological, Biochemical, Propyl Gallate, Salicylic Acid, Hexanal, Psidium guajava L., UHS18PGM1021.en_US
dc.language.isoEnglishen_US
dc.pages159p. (Due to pdf. conversion there is a difference in pages of soft copy and hard copy).en_US
dc.publisherUniversity of Horticultural Sciences, Bagalkot (KRC College of Horticulture, Arabhavi).en_US
dc.subPost Harvest Technologyen_US
dc.themeEVALUATION OF PRE AND POST HARVEST TREATMENTS AND PACKAGING FOR IMPROVEMENT OF SHELF LIFE IN GUAVA (Psidium guajava L.)en_US
dc.these.typeM.Scen_US
dc.titleEVALUATION OF PRE AND POST HARVEST TREATMENTS AND PACKAGING FOR IMPROVEMENT OF SHELF LIFE IN GUAVA (Psidium guajava L.)en_US
dc.typeThesisen_US
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