Coverart for item
The Resource Polyphenol Oxidases (PPOs) in Plants, by Aravind Jukanti, (electronic resource)

Polyphenol Oxidases (PPOs) in Plants, by Aravind Jukanti, (electronic resource)

Label
Polyphenol Oxidases (PPOs) in Plants
Title
Polyphenol Oxidases (PPOs) in Plants
Statement of responsibility
by Aravind Jukanti
Creator
Contributor
Author
Subject
Language
eng
Summary
This book is first of its kind exclusively dedicated to plant polyphenol oxidases (PPOs), highlighting their importance in the food processing industry. By reviewing the scientific developments of the past several decades,  it  offers a comprehensive overview of various aspects of plant PPOs, including chemistry, structure, functions, regulation, genetics/genomics and molecular aspects. PPOs  are copper-containing proteins found in several plant species that catalyze the hydroxylation of o-monophenols to o-diphenols and oxidation of the o-dihydroxyphenols to o-quinones. Further, the quonines undergo self-polymerization or react with amines/thiol groups to produce brown/dark coloration of products. All the PPOs contain two Cu-binding sites (CuA and CuB) as their central domain, these interact with phenolic substrates and molecular oxygen. Several of the plant PPOs contain an N-terminal transit peptide (8̃0-100 amino acids ) necessary for plastid import. The PPOs occur in latent form that are activated by various treatments including acid and base shock, exposure to detergents or  proteolytic degradation. The pH optimum of PPOs varies widely depending upon different plant species but is usually 4̃.0 {u2013} 8.0. Similarly, the optimum temperature also varies as per the source and substrate involved ranging from 30 to 45 °C. Multiple PPO isoforms have been reported in several plant species, and the chromosomal location of PPOs has also been studied in some species. The physiological role (s) of PPOs is not entirely understood, but they could be involved in defense-related functions in plants. From an applied perspective, PPOs are implicated in enzymatic browning/darkening of cereal products, vegetables and fruits. Interestingly, browning is preferred in some instances like the processing of black tea, cocoa, and coffee as it enhances their quality by forming flavorful products. There have been initiatives to specifically breed and develop cultivars with reasonably low PPO levels in the mature grain or fruit. Further, several types of inhibitors that reduce the PPO activity have also been identified. Despite their commercial/economic importance and the availability of literature on different aspects of PPOs in different plant species, this is the first book to provide basic information regarding PPOs. It is a valuable resource for researchers involved in quality-related research specifically in crops, vegetables and fruits. Further, as PPOs are also implicated in defense- or stress-related functions, the book is also useful to breeders, pathologists, molecular biologists, physiologists and entomologists
Is part of
Image bit depth
0
Literary form
non fiction
Polyphenol Oxidases (PPOs) in Plants, by Aravind Jukanti, (electronic resource)
Label
Polyphenol Oxidases (PPOs) in Plants, by Aravind Jukanti, (electronic resource)
Link
http://libproxy.rpi.edu/login?url=http://dx.doi.org/10.1007/978-981-10-5747-2
Publication
Related Contributor
Related Location
Related Agents
Related Authorities
Related Subjects
Antecedent source
mixed
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Color
not applicable
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Contents
Chapter 1. Introduction -- Chapter 2. Distribution, Localization and Structure of Plant Polyphenol Oxidases (PPOs) -- Chapter 3. Physicochemical Properties of Polyphenol Oxidases -- Chapter 4. Reaction Features of Polyphenol Oxidases -- Chapter 5. Function(s)/Role(s) of Polyphenol Oxidases -- Chapter 6. Polyphenol Oxidases(s): Importance in Food Industry -- Chapter 7. Advances in Polyphenol Oxidase (PPO) Research
http://library.link/vocab/cover_art
https://contentcafe2.btol.com/ContentCafe/Jacket.aspx?Return=1&Type=S&Value=9789811057472&userID=ebsco-test&password=ebsco-test
Dimensions
unknown
http://library.link/vocab/discovery_link
{'f': 'http://opac.lib.rpi.edu/record=b4380208'}
Extent
VII, 131 p. 41 illus., 26 illus. in color.
File format
multiple file formats
Form of item
electronic
Isbn
9789811057472
Level of compression
uncompressed
Media category
computer
Media MARC source
rdamedia
Media type code
c
Other physical details
online resource.
Quality assurance targets
absent
Reformatting quality
access
Specific material designation
remote

Library Locations

    • Folsom LibraryBorrow it
      110 8th St, Troy, NY, 12180, US
      42.729766 -73.682577
Processing Feedback ...