Abstract

Coconut oil (Cocos nucifera L.), widely used by the food and pharmaceutical industries, has required analytical methods to assess the conditions of processing and storage. This paper compared the chemical composition and physical-chemical properties of extra virgin coconut oil produced by Brazilian industry and coconut oil obtained by hand (marketed in the free fair Cuite PB). The results confirmed the high content of saturated fatty acids of coconut oil, due mainly to the high content of lauric acid (approximately 2% for the extra virgin oil and 3% for oil obtained by hand), responsible for increasing the oxidative stability, as well as change the profile oil merger, contributing to the increased use of fat of this oil in specific products of the pharmaceutical and food industries. It may be appreciated that in most cases, the results for the industrial and artisanal coconut oil samples were higher than the standard established by Resolution No 482 of 09.23.1999, the National Health Surveillance Agency ANVISA where you can have negative effects on oil quality as to be unfit for human consumption. The artisanal extraction method slightly interfered with physicochemical properties as independent of the methodology used these parameters remain within the limits stipulated by law for cold pressed oils and unrefined. But the analyzes of coconut oil were extremely important for us to refer to the oil that his studies are still scarce and controversial in the literature. Considering that coconut oil is being widely publicized by the media, with regard to their therapeutic properties, the comparative analysis of the chemical composition and physical and chemical characteristics of the studied oils can contribute significantly to provide clarification on the difference between oils when obtained through the industrial and artisanal processes, aiming to raise awareness in getting a quality product.

Highlights

  • Coconut oil (Cocos nucifera L.), widely used by the food and pharmaceutical industries, has required analytical methods to assess the conditions of processing and storage

  • This paper compared the chemical composition and physical-chemical properties of extra virgin coconut oil produced by Brazilian industry and coconut oil obtained by hand

  • The results confirmed the high content of saturated fatty acids of coconut oil, due mainly to the high content of lauric acid, responsible for increasing the oxidative stability, as well as change the profile oil merger, contributing to the increased use of fat of this oil in specific products of the pharmaceutical and food industries

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Summary

Introdução

Os óleos vegetais são extraídos de diferentes plantas oleaginosas e utilizados principalmente como fonte de alimento e na produção de cosméticos, lubrificantes, tintas, fármacos, biodiesel, entre outros. Os ácidos graxos são considerados os blocos construtores dos lipídios e constituem cerca de 90% das gorduras nos alimentos (SANTOS e SOUZA, 2007). Caso do óleo de coco, são resistentes a oxidação não enzimática e ao contrário de outros óleos e gorduras apresentam temperatura de fusão baixa e bem definida (24,4 25,6 oC). É também considerado o mais saudável para cozinhar, não apresentando gordura trans gerada pelo processo de hidrogenação, que está presente em todos os outros óleos de origem vegetal, como os de soja, canola, milho e até o de oliva, que é considerado o óleo mais saudável entre os citados, pois apresenta alto teor de gorduras saturadas (MACHADO et al, 2006). Este trabalho visa avaliar as propriedades químicas e físico-químicas de amostras de óleo de coco industrial e artesanal, de forma comparativa

Material
Determinação da Umidade
Determinação do Índice de Acidez
Determinação do Índice de Saponificação
Determinação do Índice de Iodo
Teor de Cinzas
Densidade
2.3.10 Teor de Ácidos Graxos Livres
2.3.11 Determinação do Índice de Peróxidos
Resultados e Discussão
Full Text
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