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Innovation in Tigernut (Cyperus Esculentus L.) Milk Production: In Situ Hydrolysis of Starch

Tigernut tubers (Cyperus esculentus) are used for the production of vegetable milk, commonly known as “Horchata de chufa” in Spain. The presence of starch in the tuber limits the yield of the milk, since this carbohydrate gelatinizes during the pasteurization of the milk and leads to the considerabl...

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Autores principales: Djomdi, Hamadou, Bakari, Gibert, Olivier, Tran, Thierry, Delattre, Cedric, Pierre, Guillaume, Michaud, Philippe, Ejoh, Richard, Ndjouenkeu, Robert
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7362075/
https://www.ncbi.nlm.nih.gov/pubmed/32585802
http://dx.doi.org/10.3390/polym12061404
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author Djomdi,
Hamadou, Bakari
Gibert, Olivier
Tran, Thierry
Delattre, Cedric
Pierre, Guillaume
Michaud, Philippe
Ejoh, Richard
Ndjouenkeu, Robert
author_facet Djomdi,
Hamadou, Bakari
Gibert, Olivier
Tran, Thierry
Delattre, Cedric
Pierre, Guillaume
Michaud, Philippe
Ejoh, Richard
Ndjouenkeu, Robert
author_sort Djomdi,
collection PubMed
description Tigernut tubers (Cyperus esculentus) are used for the production of vegetable milk, commonly known as “Horchata de chufa” in Spain. The presence of starch in the tuber limits the yield of the milk, since this carbohydrate gelatinizes during the pasteurization of the milk and leads to the considerable solidification of this drink. The present work aims to improve the yields and extraction practice of the milk by an in situ hydrolysis of starch, using exogenous amylases of industrial or vegetable origin. The obtained results show that sprouting improves the extraction yields of tigernut milk, which goes from 50% to about 70%. This improvement in milk yield corresponds to a hydrolysis of about 35% of the starch in the tuber. The use of exogenous amylases leads to starch hydrolysis rates of 45% and 70%, respectively, for amylolytic extracts from sprouted tigernut tubers and amylase, with the corollary of a natural increase in the sweetness of milk. This technical approach makes it possible to produce a naturally sweetened tigernut milk which easily lends itself to pasteurization without a significant increase in viscosity.
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spelling pubmed-73620752020-07-21 Innovation in Tigernut (Cyperus Esculentus L.) Milk Production: In Situ Hydrolysis of Starch Djomdi, Hamadou, Bakari Gibert, Olivier Tran, Thierry Delattre, Cedric Pierre, Guillaume Michaud, Philippe Ejoh, Richard Ndjouenkeu, Robert Polymers (Basel) Article Tigernut tubers (Cyperus esculentus) are used for the production of vegetable milk, commonly known as “Horchata de chufa” in Spain. The presence of starch in the tuber limits the yield of the milk, since this carbohydrate gelatinizes during the pasteurization of the milk and leads to the considerable solidification of this drink. The present work aims to improve the yields and extraction practice of the milk by an in situ hydrolysis of starch, using exogenous amylases of industrial or vegetable origin. The obtained results show that sprouting improves the extraction yields of tigernut milk, which goes from 50% to about 70%. This improvement in milk yield corresponds to a hydrolysis of about 35% of the starch in the tuber. The use of exogenous amylases leads to starch hydrolysis rates of 45% and 70%, respectively, for amylolytic extracts from sprouted tigernut tubers and amylase, with the corollary of a natural increase in the sweetness of milk. This technical approach makes it possible to produce a naturally sweetened tigernut milk which easily lends itself to pasteurization without a significant increase in viscosity. MDPI 2020-06-23 /pmc/articles/PMC7362075/ /pubmed/32585802 http://dx.doi.org/10.3390/polym12061404 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Djomdi,
Hamadou, Bakari
Gibert, Olivier
Tran, Thierry
Delattre, Cedric
Pierre, Guillaume
Michaud, Philippe
Ejoh, Richard
Ndjouenkeu, Robert
Innovation in Tigernut (Cyperus Esculentus L.) Milk Production: In Situ Hydrolysis of Starch
title Innovation in Tigernut (Cyperus Esculentus L.) Milk Production: In Situ Hydrolysis of Starch
title_full Innovation in Tigernut (Cyperus Esculentus L.) Milk Production: In Situ Hydrolysis of Starch
title_fullStr Innovation in Tigernut (Cyperus Esculentus L.) Milk Production: In Situ Hydrolysis of Starch
title_full_unstemmed Innovation in Tigernut (Cyperus Esculentus L.) Milk Production: In Situ Hydrolysis of Starch
title_short Innovation in Tigernut (Cyperus Esculentus L.) Milk Production: In Situ Hydrolysis of Starch
title_sort innovation in tigernut (cyperus esculentus l.) milk production: in situ hydrolysis of starch
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7362075/
https://www.ncbi.nlm.nih.gov/pubmed/32585802
http://dx.doi.org/10.3390/polym12061404
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