International Journal of Advances in Science, Engineering and Technology(IJASEAT)
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Volume-8,Issue-1  ( Jan, 2020 )
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  Journal Paper

Paper Title
Post Harvest Management Of Easily Perishable Horticultural Crops Using Probiotics

Abstract
Post-harvest management and value-addition is integral to horticultural production for reduction in post-harvest losses, meet consumer requirements, preserve nutritional quality, optimize the utilization of by-products and create employment opportunities. Probiotics are live microorganisms that confer a health benefit to the host when administered in adequate amounts. Strains belonging to Bifidobacterium and Lactobacillus, which are the predominant and subdominant groups of the gastrointestinal micro biota, respectively, are the most widely used probiotic bacteria and are included in many functional foods and dietary supplements. Action of probiotics is such that, probiotics ferment sugars and produce organic acids such as lactic acid and acetic acid. The mixtures of organic acids have a powerful antimicrobial activity at low pH. Secondary metabolites i.e. ethanol, acetaldehyde, acetoin, carbon dioxide, reuterin, reutericyclin and other germicidal compounds are produced by probiotics. These low molecular weight components works as growth inhibitory or membrane disrupting factors against pathogens. Some probiotics strains are able to produce proteinaceous antibiotic like substances designated as bacteriocins. Bacteriocins are ribosomally coded short peptides and exert antimicrobial action by interfering with cell wall synthesis and by causing pore formation in cell wall of the target organisms. Hydrogen peroxide is produced by lactic acid bacteria through the action of flavoprotein - containing oxidases, NADH oxidases and superoxide dismutase. Low amount of H2O2 oxidize sulphydryl group of surface proteins and enzymes of target organisms. Concurrently they are “good” bacteria that are added to foods to promote a healthy environment of microorganisms in the digestive tract, supposedly to aid in digestion and promote good gastrointestinal health. So these probiotics can be used to check postharvest losses of easily perishable horticultural crops as they are attacked by many bacterial (Pencillium- blue mould) and fungal (alternaria rot etc.) diseases by pre-harvest and post-harvest sprays of different probiotics.


Author - Nissi Flora Godi

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| Published on 2016-06-14
   
   
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