The effect of pre-harvest pruning of cassava upon root deterioration and quality characteristics
One of the major constraints of cassava as a crop is its perishability. Physiological deterioration, parenchymal blue-black vascular streaking, often starts within 24 h after harvest. This paper presents the results of a detailed study of the effects of pre-harvest pruning upon post-harvest physiological deterioration (PPD) and some other quality characteristics. Six cultivars, grown at CIAT (Centro International de Agricultura Tropical), with varying intrinsic susceptibility to PPD), were assessed at pruning-harvest intervals of 0, 2, 4, 6, 8, 10, 15, 20, 25, 28 and 39 days. After harvesting, the roots were analysed. For the unpruned plants a low susceptibility was found to coincide with a low dry matter content and a high sugar content. After pruning, the susceptibility for all cultivars was drastically reduced, reaching a minimum of around 25% of the original value for a pruning-harvest interval of up to 25 days. Beyond this interval the plants slowly develop new leaf canopy, normal assimilation sets in again and the starch content increases. Analysis of the cassava roots revealed a relationship between the combined sugar and starch contents and the interval duration, and that sugar and starch contents were inversely related to each other. The sugar content increased with the interval period, probably as a result of starch hydrolysis. Other properties such as the contents of dry matter, cyanogen, scopoletin, amylose and reducing sugars and the starch pasting properties were not affected by pruning to a comparable, interval-dependent, extent. It is concluded that the sugar content, ie the sugaristarch ratio, of cassava roots is positively related to their resistance to post-harvest physiological deterioration.
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Subjects: | J11 - Manutention, transport, stockage et conservation des produits d'origine végétale, Q04 - Composition des produits alimentaires, Q02 - Traitement et conservation des produits alimentaires, manioc, taille, détérioration, physiologie après récolte, amidon, sucre, qualité, aptitude à la conservation, http://aims.fao.org/aos/agrovoc/c_9649, http://aims.fao.org/aos/agrovoc/c_6274, http://aims.fao.org/aos/agrovoc/c_10350, http://aims.fao.org/aos/agrovoc/c_24406, http://aims.fao.org/aos/agrovoc/c_7369, http://aims.fao.org/aos/agrovoc/c_7498, http://aims.fao.org/aos/agrovoc/c_6400, http://aims.fao.org/aos/agrovoc/c_4082, |
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dig-cirad-fr-4762532024-01-28T08:31:16Z http://agritrop.cirad.fr/476253/ http://agritrop.cirad.fr/476253/ The effect of pre-harvest pruning of cassava upon root deterioration and quality characteristics. Van Oirschot Quirien E.A., O'Brien Gerard M., Dufour Dominique, El Sharkawy Mabrouk A., Mesa Eloina. 2000. Journal of the Science of Food and Agriculture, 80 (13) : 1866-1873.https://doi.org/10.1002/1097-0010(200010)80:13<1866::AID-JSFA718>3.0.CO;2-H <https://doi.org/10.1002/1097-0010(200010)80:13<1866::AID-JSFA718>3.0.CO;2-H> The effect of pre-harvest pruning of cassava upon root deterioration and quality characteristics Van Oirschot, Quirien E.A. O'Brien, Gerard M. Dufour, Dominique El Sharkawy, Mabrouk A. Mesa, Eloina eng 2000 Journal of the Science of Food and Agriculture J11 - Manutention, transport, stockage et conservation des produits d'origine végétale Q04 - Composition des produits alimentaires Q02 - Traitement et conservation des produits alimentaires manioc taille détérioration physiologie après récolte amidon sucre qualité aptitude à la conservation http://aims.fao.org/aos/agrovoc/c_9649 http://aims.fao.org/aos/agrovoc/c_6274 http://aims.fao.org/aos/agrovoc/c_10350 http://aims.fao.org/aos/agrovoc/c_24406 http://aims.fao.org/aos/agrovoc/c_7369 http://aims.fao.org/aos/agrovoc/c_7498 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_4082 One of the major constraints of cassava as a crop is its perishability. Physiological deterioration, parenchymal blue-black vascular streaking, often starts within 24 h after harvest. This paper presents the results of a detailed study of the effects of pre-harvest pruning upon post-harvest physiological deterioration (PPD) and some other quality characteristics. Six cultivars, grown at CIAT (Centro International de Agricultura Tropical), with varying intrinsic susceptibility to PPD), were assessed at pruning-harvest intervals of 0, 2, 4, 6, 8, 10, 15, 20, 25, 28 and 39 days. After harvesting, the roots were analysed. For the unpruned plants a low susceptibility was found to coincide with a low dry matter content and a high sugar content. After pruning, the susceptibility for all cultivars was drastically reduced, reaching a minimum of around 25% of the original value for a pruning-harvest interval of up to 25 days. Beyond this interval the plants slowly develop new leaf canopy, normal assimilation sets in again and the starch content increases. Analysis of the cassava roots revealed a relationship between the combined sugar and starch contents and the interval duration, and that sugar and starch contents were inversely related to each other. The sugar content increased with the interval period, probably as a result of starch hydrolysis. Other properties such as the contents of dry matter, cyanogen, scopoletin, amylose and reducing sugars and the starch pasting properties were not affected by pruning to a comparable, interval-dependent, extent. It is concluded that the sugar content, ie the sugaristarch ratio, of cassava roots is positively related to their resistance to post-harvest physiological deterioration. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/476253/1/ID476253.pdf text Cirad license info:eu-repo/semantics/embargoedAccess info:eu-repo/date/embargoEnd/2999-12-31 https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1002/1097-0010(200010)80:13<1866::AID-JSFA718>3.0.CO;2-H 10.1002/1097-0010(200010)80:13<1866::AID-JSFA718>3.0.CO;2-H info:eu-repo/semantics/altIdentifier/doi/10.1002/1097-0010(200010)80:13<1866::AID-JSFA718>3.0.CO;2-H info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1002/1097-0010(200010)80:13<1866::AID-JSFA718>3.0.CO;2-H |
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J11 - Manutention, transport, stockage et conservation des produits d'origine végétale Q04 - Composition des produits alimentaires Q02 - Traitement et conservation des produits alimentaires manioc taille détérioration physiologie après récolte amidon sucre qualité aptitude à la conservation http://aims.fao.org/aos/agrovoc/c_9649 http://aims.fao.org/aos/agrovoc/c_6274 http://aims.fao.org/aos/agrovoc/c_10350 http://aims.fao.org/aos/agrovoc/c_24406 http://aims.fao.org/aos/agrovoc/c_7369 http://aims.fao.org/aos/agrovoc/c_7498 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_4082 J11 - Manutention, transport, stockage et conservation des produits d'origine végétale Q04 - Composition des produits alimentaires Q02 - Traitement et conservation des produits alimentaires manioc taille détérioration physiologie après récolte amidon sucre qualité aptitude à la conservation http://aims.fao.org/aos/agrovoc/c_9649 http://aims.fao.org/aos/agrovoc/c_6274 http://aims.fao.org/aos/agrovoc/c_10350 http://aims.fao.org/aos/agrovoc/c_24406 http://aims.fao.org/aos/agrovoc/c_7369 http://aims.fao.org/aos/agrovoc/c_7498 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_4082 |
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J11 - Manutention, transport, stockage et conservation des produits d'origine végétale Q04 - Composition des produits alimentaires Q02 - Traitement et conservation des produits alimentaires manioc taille détérioration physiologie après récolte amidon sucre qualité aptitude à la conservation http://aims.fao.org/aos/agrovoc/c_9649 http://aims.fao.org/aos/agrovoc/c_6274 http://aims.fao.org/aos/agrovoc/c_10350 http://aims.fao.org/aos/agrovoc/c_24406 http://aims.fao.org/aos/agrovoc/c_7369 http://aims.fao.org/aos/agrovoc/c_7498 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_4082 J11 - Manutention, transport, stockage et conservation des produits d'origine végétale Q04 - Composition des produits alimentaires Q02 - Traitement et conservation des produits alimentaires manioc taille détérioration physiologie après récolte amidon sucre qualité aptitude à la conservation http://aims.fao.org/aos/agrovoc/c_9649 http://aims.fao.org/aos/agrovoc/c_6274 http://aims.fao.org/aos/agrovoc/c_10350 http://aims.fao.org/aos/agrovoc/c_24406 http://aims.fao.org/aos/agrovoc/c_7369 http://aims.fao.org/aos/agrovoc/c_7498 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_4082 Van Oirschot, Quirien E.A. O'Brien, Gerard M. Dufour, Dominique El Sharkawy, Mabrouk A. Mesa, Eloina The effect of pre-harvest pruning of cassava upon root deterioration and quality characteristics |
description |
One of the major constraints of cassava as a crop is its perishability. Physiological deterioration, parenchymal blue-black vascular streaking, often starts within 24 h after harvest. This paper presents the results of a detailed study of the effects of pre-harvest pruning upon post-harvest physiological deterioration (PPD) and some other quality characteristics. Six cultivars, grown at CIAT (Centro International de Agricultura Tropical), with varying intrinsic susceptibility to PPD), were assessed at pruning-harvest intervals of 0, 2, 4, 6, 8, 10, 15, 20, 25, 28 and 39 days. After harvesting, the roots were analysed. For the unpruned plants a low susceptibility was found to coincide with a low dry matter content and a high sugar content. After pruning, the susceptibility for all cultivars was drastically reduced, reaching a minimum of around 25% of the original value for a pruning-harvest interval of up to 25 days. Beyond this interval the plants slowly develop new leaf canopy, normal assimilation sets in again and the starch content increases. Analysis of the cassava roots revealed a relationship between the combined sugar and starch contents and the interval duration, and that sugar and starch contents were inversely related to each other. The sugar content increased with the interval period, probably as a result of starch hydrolysis. Other properties such as the contents of dry matter, cyanogen, scopoletin, amylose and reducing sugars and the starch pasting properties were not affected by pruning to a comparable, interval-dependent, extent. It is concluded that the sugar content, ie the sugaristarch ratio, of cassava roots is positively related to their resistance to post-harvest physiological deterioration. |
format |
article |
topic_facet |
J11 - Manutention, transport, stockage et conservation des produits d'origine végétale Q04 - Composition des produits alimentaires Q02 - Traitement et conservation des produits alimentaires manioc taille détérioration physiologie après récolte amidon sucre qualité aptitude à la conservation http://aims.fao.org/aos/agrovoc/c_9649 http://aims.fao.org/aos/agrovoc/c_6274 http://aims.fao.org/aos/agrovoc/c_10350 http://aims.fao.org/aos/agrovoc/c_24406 http://aims.fao.org/aos/agrovoc/c_7369 http://aims.fao.org/aos/agrovoc/c_7498 http://aims.fao.org/aos/agrovoc/c_6400 http://aims.fao.org/aos/agrovoc/c_4082 |
author |
Van Oirschot, Quirien E.A. O'Brien, Gerard M. Dufour, Dominique El Sharkawy, Mabrouk A. Mesa, Eloina |
author_facet |
Van Oirschot, Quirien E.A. O'Brien, Gerard M. Dufour, Dominique El Sharkawy, Mabrouk A. Mesa, Eloina |
author_sort |
Van Oirschot, Quirien E.A. |
title |
The effect of pre-harvest pruning of cassava upon root deterioration and quality characteristics |
title_short |
The effect of pre-harvest pruning of cassava upon root deterioration and quality characteristics |
title_full |
The effect of pre-harvest pruning of cassava upon root deterioration and quality characteristics |
title_fullStr |
The effect of pre-harvest pruning of cassava upon root deterioration and quality characteristics |
title_full_unstemmed |
The effect of pre-harvest pruning of cassava upon root deterioration and quality characteristics |
title_sort |
effect of pre-harvest pruning of cassava upon root deterioration and quality characteristics |
url |
http://agritrop.cirad.fr/476253/ http://agritrop.cirad.fr/476253/1/ID476253.pdf |
work_keys_str_mv |
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