Kenaf seed oil: A potential new source of edible oil

Published Date

June 2016, Vol.52:57–65, doi:10.1016/j.tifs.2016.03.014

Review

Title 

Kenaf seed oil: A potential new source of edible oil

• Author 

• Wing-Yan Cheng ^a
• Jahurul Md Haque Akanda ^b
• Kar-Lin Nyam ^a,,

• aDepartment of Food Science and Nutrition, Faculty of Applied Sciences, UCSI University, 56000, Kuala Lumpur, Malaysia
• bFaculty of Food Science and Nutrition, Universiti Malaysia Sabah, 884000, Kota Kinabalu, Sabah, Malaysia

Received 1 October 2015. Revised 31 March 2016. Accepted 31 March 2016. Available online 12 April 2016.

Highlights

• •
  Kenaf seed has high oil content and contain various bioactive molecules.
• •
  Kenaf seed oil (KSO) consists mostly of unsaturated fatty acids.
• •
  Microencapsulation of kenaf seed oil (KSO) through spray drying enhances its oxidative stability.
• •
  KSO possesses anti-hypercholesterolemia, antioxidant, anti-cancer and anti-inflammatory.
• •
  KSO can be used as edible oil, biofuel, chemicals and in cosmetics.

Abstract

Background

Kenaf is gaining more attention in recent years due to its high fiber content and medicinal usage. It is now cultivated in many countries and its commercial value is being explored. Kenaf seeds, which are usually discarded as waste product have high oil content and can be a new source of edible oil.

Scope and approach

In this review, kenaf seed oil (KSO) will be described in details. Kenaf seed oil can be extracted from kenaf seeds by Soxhlet extraction or supercritical fluid extraction (SFE). In order to prolong the shelf life of kenaf seed oil, microencapsulation is carried out and the storage stability is studied. The health benefits and uses of kenaf seed oil are also studied to explore its commercial value and applications.

Key findings and conclusions

Kenaf seed oil is composed mostly of unsaturated fatty acid with palmitic, oleic and linoleic being the major one. It also contains various bioactive components such as phenols, saponins, tannins and alkaloids. It is reported that Soxhlet extraction gives higher yield than SFE but the latter method is preferred due to safety issue. Spray drying is used to encapsulate the KSO and the microencapsulated KSO has enhanced oxidative stability. KSO possesses various biological activities such as anti-hypercholesterolemic, anti-oxidation, anti-cancer, anti-inflammatory and others due to the presence of phytochemicals. Besides using as edible oil, KSO finds applications in various fields, such as cosmetics, chemicals and fuel.

Keywords

• Edible oil
• Spray drying
• Supercritical fluid extraction
• Phytochemicals
• Biological activities

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• ∗ 
  Corresponding author.

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http://www.sciencedirect.com/science/article/pii/S0924224415301242