Film Based Ethylene Scavenging System for Extension of Shelf–Life of Fresh Produce

Alok, Mishra (2004) Film Based Ethylene Scavenging System for Extension of Shelf–Life of Fresh Produce. Masters thesis, University of Mysore.

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Abstract

This Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page.

Item Type:	Thesis (Masters)
Additional Information:	<p align="justify">Ethylene is a common breakdown product of virtually all-aerobic combustion processes. Plant sources, ripening rooms, the ballasts that hold fluorescent lights are sources of ethylene. Although several soilborne microorganisms produce ethylene, others degrade it. Nitrogen–fixing bacteria can reduce acetylene to ethylene. Approximately 25-30% of fungal species tested produce ethylene on approximate media. Ultraviolet photodecomposition of atmospheric ethylene is an important environmental ethylene sink and yields primarily hydrogen, acetylene, n-butane and ethane. Mycobacterium paraffinicum is thought to be an efficient oxidizer of ethylene. Ethylene reacts with ozone to yield water, carbon dioxide (CO2), carbon monoxide (CO) and formaldehyde. Ethylene accelerates the respiration of fruits, vegetables and ornamental plants. In non-climacteric plant organs ethylene induces a reversible increase in respiration. Exposure of mature fruit to ethylene leads to increased respiration, increased production of endogenous ethylene and softening of fruit tissues. Ethylene causes flower and leaf abscission of many potted ornamental plants. Ethylene increases the rate of chlorophyll degradation in leaf, fruit and flower tissues .Ethylene causes number of specific post harvest disorders of fruits and vegetables. In addition several postharvest plant pathogens produce ethylene. Ethylene causes the “triple response”of etiolated seedling. Ethylene causes epinasty in flooded tomato plants. Ethylene promotes formation of flowers in cucurbits. Ethylene stimulates the physiological aspects of root growth. Lettuce is also susceptible to ethylene. In response to ethylene, carrots produce bitter tasting compounds called isocoumarins. Ethylene induces antifreeze activity in winter rye. The ethylene releasing agent ethephon and the ethylene precursor, 1-aminocyclopropane-1-carboxylate also induced high levels of antifreeze activity at 200C and this effect could be blocked by ethylene inhibition. Rye plants exposed to drought produced both ethylene and antifreeze activity within 24 hours. Ethylene production in horticultural commodities increases soon after harvest. Ethylene scavenging is very important for horticultural commodities so that there acceptability can be maintained and consumers can get fresh produce. In India not much work has been done on this aspect. Ethylene removal from storage chamber, from packages of fruits and vegetables is becoming today’s need to prevent deterioration of fruits and vegetables. This can be done by using ethylene scavengers in storage rooms, packets, godowns, bags and containers. Ethylene scavengers can be incorporated in packaging material or it can be kept in sachet. The sachet should be permeable to ethylene so that ethylene can be absorbed or adsorbed. Scavenger should be non-toxic and should not impart undesirable characteristics to food material as soon as food material comes in contact with the scavenger. Therefore, development of ethylene scavenger with desirable characteristic is challenging job of present day world.</p>
Uncontrolled Keywords:	ethylene scavenging system shelf life fresh produce
Subjects:	600 Technology > 08 Food technology > 06 Preservation and Storage 600 Technology > 08 Food technology > 06 Preservation and Storage > 06 Packaging
Divisions:	Human Resource Development
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	28 Feb 2007
Last Modified:	28 Dec 2011 09:26
URI:	http://ir.cftri.res.in/id/eprint/425

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