Studies on the effect of post harvest treatments on shelf life and quality of mango [Mangifera indica l.] cv. Amrapali

Abstract

he physicochemical characteristics and shelf life of mango[Mangifera indica L.] fruits treated with calci- um chloride (CaCl2-1%, 2%), calcium nitrate (Ca(NO3)2-1%, 2%), potassium nitrate (KNO3-1%, 2%) and carboxyl methyl cellulose (CMC - 0.5, 1%) were studied. Untreated fruits served as the control. All tested treatments indicated a significant delay in the change of weight loss (16.84%), ripening (51.66%), decaying percentage (46.66) and retained firmness (3.23 kg/cm2) of fruits and biochemical qualities viz., total soluble solids(22.33Brix), sugar accumulation (18.17%) and tritratable acidity on 16th day in mango fruits compared to control. The significant (5%) impact of treatment is found on the least decay percentage in the order of fruits treated with calcium nitrate (2%) followed by 1% Ca(NO3)2, 2% CaCl2 and 1% CaCl2. Hence, it could be concluded that post harvest chemical treatment with calcium nitrate, calcium chloride (1%, 2%) has the potential to control spoilage, prolong the storage life and preserve valuable attributes of post harvest quality of mango, presumably because of its effect on inhibition of ripening and senescence processes by lowering the respiration rate.

Effect of Post-Harvest Treatment on Physico-Chemical Quality of Ber (Ziziphus mauritiana L.) cv. Apple

“…The maximum non reducing sugar was retained in fruits treated with Ca(NO 3 ) 2 @ 1%under ambient and cold storage conditions. The present results are in close conformity with the finding of Hiwale and Singh (2003) and Agrwal and Jaiswal (2012) and Bisen et al, (2014) in guava, T. Mounika et al, (2017) and Vikash Ku. Sonkar et at.…”

“…Therefore, total soluble solids showed gradual decrease with the advancement of storage period which may be due to increase in senescence process and high respiration rate. Similar rise and fall in total soluble solids was also noticed in guava Jayachandran et al, (2004) and Akhtar et al, (2010) in loquat, (Singh et al, 2010) in peach fruits, Sakhale et al, (2009) in mango, Agrwal and Jaiswal (2012) in guava and Reshi et al, (2013) in litchi, Mounika et al, (2017) in apple.…”

“…Ber is a nonclimacteric fruit, rich in starch reserves and during post -harvest storage starch is hydrolyzed and liberating reducing sugars with enhancement of storage Jayachandran et al, (2005) in guava, Navdeep et al, (2005) in pear. It is might be due to Ca(NO 3 ) 2 , CaCl 2 effect in Sharma and Singh (2005) in custard apple, ber fruits by Singh and Mandal (2000) in litchi, Singh et al, (2010), Patel et al, (2011) in custard apple, Kumar et al, (2011), Tripathi and Shukla (2011), Gangwar et al, (2012) in aonla and T. Mounika et al, (2017) in apple. During 3 rd , 5 th , 10 th and 15 th days of storage, the interaction effect of storage condition and chemical treatment on non-reducing sugar content of ber was also found significant from table no 2.…”

Effect of Pre-harvest Sprays of Calcium Compounds and Growth Regulator for Uniform Ripening on Physical Parameters of Sapota Cv. Kalipatti

“…The extended shelf life in CaCl 2 treatment may be due to the fact that calcium enhances fruit firmness relative to control which leads to slower hastening and extends the shelf-life. Similar results were obtained by Marzouk and Kassim (2011) in Navel orange, Mounika et al, (2017) in mango.…”

Quality characteristics of stored tomato fruit treated with two formulations of African black pepper

“…Initial reduction in TSS of samples treated with P. guineense was observed in the first 25 days. The increase in TSS could be due to transformation of pectin substances and other polysaccharides into soluble sugar (Mounika et al, 2017). At the end of the storage, samples treated with 4% and 5% P. guineense had the highest brix values.…”