Purification trials of Tamanu (Calophyllum inophyllum L.) oil☆

Tamanu (Calophyllum inophyllum L.) oil is a non-food oil used in traditional medicine, and with potential applications in the pharmaceutical and cosmetic industry. However, this oil, obtained by pressing the nuts, is being used as crude oil, in spite of a variable but large amount of non-lipids (cal...

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Autores principales:	Nguyen Minh Nhat, Le Thanh Dat, Nguyen Bao Viet, Nguyen Thi Ngoc Lan, Pioch Daniel, Mai Huynh Cang
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	tamanu crude oil deresination degumming neutralization bleaching Oils, fats, and waxes TP670-699
Acceso en línea:	https://doaj.org/article/14e6c9c59f8d49af85fe182b191c0ce8
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spelling	oai:doaj.org-article:14e6c9c59f8d49af85fe182b191c0ce82021-12-02T17:14:43ZPurification trials of Tamanu (Calophyllum inophyllum L.) oil☆2272-69772257-661410.1051/ocl/2021042https://doaj.org/article/14e6c9c59f8d49af85fe182b191c0ce82021-01-01T00:00:00Zhttps://www.ocl-journal.org/articles/ocl/full_html/2021/01/ocl210039/ocl210039.htmlhttps://doaj.org/toc/2272-6977https://doaj.org/toc/2257-6614Tamanu (Calophyllum inophyllum L.) oil is a non-food oil used in traditional medicine, and with potential applications in the pharmaceutical and cosmetic industry. However, this oil, obtained by pressing the nuts, is being used as crude oil, in spite of a variable but large amount of non-lipids (called resin) being entrained. Although these should not be seen as impurities owing to their known bioactivity in many fields, not only they are responsible for the poisonous nature impeding human consumption in addition to bad smell, but they contribute to the poor oil quality, especially low stability and associated short shelf life. The present study aimed at purifying a crude tamanu oil sample through a combination of simple steps: deresination with ethanol, degumming using hot water, neutralization (KOH), bleaching with activated carbon, and deodorization. Ethanol 96% was more efficient for deresinating, compared to methanol, resulting in the extraction of 44–46% w/w of resin within 10 min (temperature 40 °C; oil:ethanol 1:1.5 w/v). Oil quality was checked in the industrial crude sample and in the fully refined product. The applied process strongly improved the color from dark brown to light golden yellow, decreased the acid value (62 down to 0.11 mgKOH/g of oil), and the viscosity (181 to 130 mPa.s). The saponification value was lowered from 206 to 180 mgKOH/g oil. The peroxide value was only slightly lowered from 85 to 55 mgO2/kg oil, thus pointing out the peculiar chemical nature of tamanu oil. Improving this important quality parameter would require additional research work, together with fine-tuned optimization of experimental conditions for a panel of crude oil samples; this was out of the scope of present work. This preliminary study shows that refining steps widely applied at industrial scale could help improving the quality of tamanu oil – an underused natural feedstock – for enhanced application in health and cosmetic fields.Nguyen Minh NhatLe Thanh DatNguyen Bao VietNguyen Thi Ngoc LanPioch DanielMai Huynh CangEDP Sciencesarticletamanucrude oilderesinationdegummingneutralizationbleachingOils, fats, and waxesTP670-699ENFROilseeds and fats, crops and lipids, Vol 28, p 53 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	tamanu crude oil deresination degumming neutralization bleaching Oils, fats, and waxes TP670-699
spellingShingle	tamanu crude oil deresination degumming neutralization bleaching Oils, fats, and waxes TP670-699 Nguyen Minh Nhat Le Thanh Dat Nguyen Bao Viet Nguyen Thi Ngoc Lan Pioch Daniel Mai Huynh Cang Purification trials of Tamanu (Calophyllum inophyllum L.) oil☆
description	Tamanu (Calophyllum inophyllum L.) oil is a non-food oil used in traditional medicine, and with potential applications in the pharmaceutical and cosmetic industry. However, this oil, obtained by pressing the nuts, is being used as crude oil, in spite of a variable but large amount of non-lipids (called resin) being entrained. Although these should not be seen as impurities owing to their known bioactivity in many fields, not only they are responsible for the poisonous nature impeding human consumption in addition to bad smell, but they contribute to the poor oil quality, especially low stability and associated short shelf life. The present study aimed at purifying a crude tamanu oil sample through a combination of simple steps: deresination with ethanol, degumming using hot water, neutralization (KOH), bleaching with activated carbon, and deodorization. Ethanol 96% was more efficient for deresinating, compared to methanol, resulting in the extraction of 44–46% w/w of resin within 10 min (temperature 40 °C; oil:ethanol 1:1.5 w/v). Oil quality was checked in the industrial crude sample and in the fully refined product. The applied process strongly improved the color from dark brown to light golden yellow, decreased the acid value (62 down to 0.11 mgKOH/g of oil), and the viscosity (181 to 130 mPa.s). The saponification value was lowered from 206 to 180 mgKOH/g oil. The peroxide value was only slightly lowered from 85 to 55 mgO2/kg oil, thus pointing out the peculiar chemical nature of tamanu oil. Improving this important quality parameter would require additional research work, together with fine-tuned optimization of experimental conditions for a panel of crude oil samples; this was out of the scope of present work. This preliminary study shows that refining steps widely applied at industrial scale could help improving the quality of tamanu oil – an underused natural feedstock – for enhanced application in health and cosmetic fields.
format	article
author	Nguyen Minh Nhat Le Thanh Dat Nguyen Bao Viet Nguyen Thi Ngoc Lan Pioch Daniel Mai Huynh Cang
author_facet	Nguyen Minh Nhat Le Thanh Dat Nguyen Bao Viet Nguyen Thi Ngoc Lan Pioch Daniel Mai Huynh Cang
author_sort	Nguyen Minh Nhat
title	Purification trials of Tamanu (Calophyllum inophyllum L.) oil☆
title_short	Purification trials of Tamanu (Calophyllum inophyllum L.) oil☆
title_full	Purification trials of Tamanu (Calophyllum inophyllum L.) oil☆
title_fullStr	Purification trials of Tamanu (Calophyllum inophyllum L.) oil☆
title_full_unstemmed	Purification trials of Tamanu (Calophyllum inophyllum L.) oil☆
title_sort	purification trials of tamanu (calophyllum inophyllum l.) oil☆
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/14e6c9c59f8d49af85fe182b191c0ce8
work_keys_str_mv	AT nguyenminhnhat purificationtrialsoftamanucalophylluminophyllumloil AT lethanhdat purificationtrialsoftamanucalophylluminophyllumloil AT nguyenbaoviet purificationtrialsoftamanucalophylluminophyllumloil AT nguyenthingoclan purificationtrialsoftamanucalophylluminophyllumloil AT piochdaniel purificationtrialsoftamanucalophylluminophyllumloil AT maihuynhcang purificationtrialsoftamanucalophylluminophyllumloil
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Purification trials of Tamanu (Calophyllum inophyllum L.) oil☆

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