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The Intracellular Location of Particulate‐Bound Polyphenol Oxidase in Avocado Mesocarp
Year:
1979
Source of publication :
Physiologia Plantarum
Authors :
Kahn, Varda
;
.
Sharon, Osnat
;
.
Volume :
45
Co-Authors:
SHARON, O., Division of Food Technology, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
KAHN, V., Division of Food Technology, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
227
To page:
234
(
Total pages:
8
)
Abstract:
Polyphenol oxidase of avocado mesocarp exists in a supernatant and a participate fraction. Isolation conditions were sought where maximal polyphenol oxidase activity could be retained in the particulate fraction. More polyphenol oxidase was associated with the 270–2000 g pellet than with the 2000–12,000 g pellet. Analysis of the particulate polyphenol oxidase on linear sucrose density gradient revealed two relatively heavy peaks. The data showed that the major part of polyphenol oxidase was not a constituent of chloroplasts, chromoplasts or mitochondria. The closeness of the positions of polyphenol oxidase and of catalase in both the green and the yellow zones of the mesocarp established that most of the particulate polyphenol oxidase of avocado is associated with microbodies. Copyright © 1979, Wiley Blackwell. All rights reserved
Note:
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More details
DOI :
10.1111/j.1399-3054.1979.tb01692.x
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29841
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:49
Scientific Publication
The Intracellular Location of Particulate‐Bound Polyphenol Oxidase in Avocado Mesocarp
45
SHARON, O., Division of Food Technology, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
KAHN, V., Division of Food Technology, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
The Intracellular Location of Particulate‐Bound Polyphenol Oxidase in Avocado Mesocarp
Polyphenol oxidase of avocado mesocarp exists in a supernatant and a participate fraction. Isolation conditions were sought where maximal polyphenol oxidase activity could be retained in the particulate fraction. More polyphenol oxidase was associated with the 270–2000 g pellet than with the 2000–12,000 g pellet. Analysis of the particulate polyphenol oxidase on linear sucrose density gradient revealed two relatively heavy peaks. The data showed that the major part of polyphenol oxidase was not a constituent of chloroplasts, chromoplasts or mitochondria. The closeness of the positions of polyphenol oxidase and of catalase in both the green and the yellow zones of the mesocarp established that most of the particulate polyphenol oxidase of avocado is associated with microbodies. Copyright © 1979, Wiley Blackwell. All rights reserved
Scientific Publication
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