Effects of Various Carbon Dioxide Concentrations and Storage Temperatures on the Quality of 'Empire' Apples PDF Download
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Author: Adamson Diaz Wong
Publisher:
ISBN:
Category : Apples
Languages : en
Pages : 290
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Book Description
Author: Adamson Diaz Wong
Publisher:
ISBN:
Category : Apples
Languages : en
Pages : 290
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Book Description
Author: Fanjaniaina Razafimbelo
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Extensive studies have suggested that apple consumption is associated with prevention of chronic diseases such as cardiovascular disease, certain cancers, diabetes and asthma as apple is a rich source of phytochemicals with strong antioxidant and antiproliferative activity. 1-Methylcyclopropene (1-MCP), an ethylene inhibitor has been extensively used by the apple industry to maintain quality of various apple cultivars. In New York, use of 1-MCP has been especially high because it maintains firmness throughout the marketing chain. The use of 1-MCP has raised two issues that are addressed in this thesis. The first is the relatively small amount of information about the effects of 1-MCP on nutritional quality of apple fruit. The second is that 1MCP appears to increase susceptibility of certain cultivars to physiological injuries, and in 'Empire', external CO2 injury. The effect of 1-MCP treatment on the phytochemical concentrations and activity and ascorbic acid concentrations of 'Empire' apple as affected by air and controlled atmosphere (CA) storage was investigated. Fruit were stored in air for up to 5 months, and in CA in 2 and 3 kPa O2 (2% CO2) at 0.5 and 2.2 oC for 4.5 and 9 months. Ripening was delayed by 1-MCP treatment in both air and CA storage as indicated by internal ethylene concentrations and flesh firmness. Overall, total phenolic, flavonoid and anthocyanin concentrations as well as antioxidant activity are relatively stable during air and CA storage. In CA, interactions among oxygen level, temperature and storage duration were detected but no consistent trends were observed. The only effects of 1-MCP on flavonoid or anthocyanin concentrations of fruit stored in CA were found in the flesh. Flavonoid concentrations were higher in the flesh of 1-MCP treated than untreated fruit kept in 2 kPa O2 while anthocyanin concentrations only measured in the peel were not affected. Phenolic concentrations were higher in the peel while lower in the flesh of 1-MCP treated fruit compared to the control fruit stored in air. There were no correlations found between total phenolics and antioxidant activity. Ascorbic acid concentrations declined in both peel and flesh tissues of untreated and 1-MCP treated fruit stored in air. In CA, the change was affected by several storage parameters and there were inconsistent pattern in the decline of ascorbic acid concentrations in CA-stored fruit. The effects of CO2 partial pressure, the timing of elevated CO2 exposure, delays between harvest and exposure to elevated CO2, DPA concentration, and the timing of DPA treatment after exposure of fruit to 1-MCP on the susceptibility of untreated and 1-MCP-treated 'Empire' apple fruit to external CO2 injury have also been investigated. 1-MCP-treated fruit were more susceptible to external CO2 injury than untreated fruit when stored in 5 kPa, but not 1 kPa CO2 (in 2 kPa O2). 1-MCP did not increase the period of highest susceptibility to injury during CA storage. The greatest sensitivity to injury occurred 0-3 weeks after harvest. Sensitivity to injury decreased when untreated fruit were kept in air for up to 14 days before exposure to 5 kPa CO2, but not for 1-MCP-treated fruit. DPA treatment prevented development of CO2 injury even at a level as low as 250 [MICRO SIGN]L L[-]1. DPA treatment could be delayed for 4 days after 1-MCP treatment while fruit were exposed to 5 kPa CO2 in air without injury development.
Author: Kenneth Laurence Olsen
Publisher:
ISBN:
Category : Apples
Languages : en
Pages : 12
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Author: Jose Luiz Moreira Garcia
Publisher:
ISBN:
Category : Apples
Languages : en
Pages : 216
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Author: Efraim Gil
Publisher:
ISBN:
Category : Apples
Languages : en
Pages : 136
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Author: Touran Cheraghi Seifabad
Publisher:
ISBN:
Category : Apples
Languages : en
Pages : 604
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Author: Sergio Tonetto de Freitas
Publisher: CRC Press
ISBN: 1351973169
Category : Technology & Engineering
Languages : en
Pages : 801
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Book Description
This book, chock full of color illustrations, addresses the main postharvest physiological disorders studied in fruits and vegetables. For a wide variety of fruits and vegetables, Postharvest Physiological Disorders in Fruits and Vegetables describes visual symptoms, triggering and inhibiting mechanisms, and approaches to predict and control these disorders after harvest. Color photographs illustrate the disorders, important factors, physiology, and management. The book includes a detailed description of the visual symptoms, triggering and inhibiting mechanisms, and possible approaches to predict and control physiological disorders. The mechanisms triggering and inhibiting the disorders are discussed in detail in each chapter, based on recent studies, which can help readers better understand the factors regulating each disorder. The description of possible approaches to predict and control each disorder can help growers, shippers, wholesalers, and retailers to determine the best management practices to reduce disorder incidence and crop losses. Features: Presents visual symptoms of postharvest physiological disorders that will help readers to precisely identify the disorders in fruits and vegetables Details mechanisms triggering and inhibiting the postharvest disorders Explains possible approaches to predict and control these disorders Suggests the best postharvest management approaches for each crop Although there are many scientific publications on postharvest physiological disorders, there are no recent reviews or books putting together the most recent information about the mechanisms regulating, as well as about the possible approaches to predict and control these disorders.
Author:
Publisher: ScholarlyEditions
ISBN: 1464963452
Category : Science
Languages : en
Pages : 3676
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Book Description
Issues in Life Sciences: Botany and Plant Biology Research: 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Life Sciences—Botany and Plant Biology Research. The editors have built Issues in Life Sciences: Botany and Plant Biology Research: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Life Sciences—Botany and Plant Biology Research in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Life Sciences: Botany and Plant Biology Research: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.
Author: Shabir Ahmad Mir
Publisher: Springer
ISBN: 3319768433
Category : Technology & Engineering
Languages : en
Pages : 417
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Book Description
This edited volume provides insight into temperate fruits, with an emphasis on postharvest physiology, storage, packaging and technologies for maintaining fruit quality. Chapters are devoted to individual fruits and focus on fundamental issues such as methods for maintaining or enhancing quality, minimizing postharvest losses, and recommended technologies to boost demand. Contributions come from experts in the field, making this a key reference for all aspects of postharvest management of temperate fruits. The volume is unique in its focus on the biodiversity, nutritional and health benefits, and postharvest technologies for shelf life enhancement of temperate fruits. Contributing authors address the postharvest biology and technology of individual temperate fruits such as plum, cherry, peach, apricot, apple, pear, quince, loquat, kiwi, persimmon and berries. There has been tremendous growth in the research and development of new techniques to maintain the quality of temperate fruits from farm to table. Contributions from experts in the field cover these recent advances, providing up-to-date and relevant information for researchers, postharvest/fruit technologists, food scientists, postgraduate students, and others working in the industry.
Author: Thomas Samuel Handwerker
Publisher:
ISBN:
Category : Apples
Languages : en
Pages : 156
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Book Description
