Effect of Accelerated Storage on Microencapsulated Kenaf Seed Oil

Abstract

In order to improve the quality and protect against degradation, kenaf (Hibiscus cannabinus L.) seed oil was microencapsulated by using spray drying. The microencapsulated kenaf seed oil (MKSO) was then stored at 65 °C for 24 days, the changes of fatty acids and bioactive compounds were examined every six days. Bulk (unencapsulated) kenaf seed oil was used as a control and was compared to the MKSO. The fatty acids and phytosterols compositions were determined by using gas chromatography, while tocopherols and phenolic acids of microencapsulated kenaf seed oil were determined by using high performance liquid chromatography. The results showed that there was a significant decrease (p < 0.05) in bioactive compounds in kenaf seed oil while the bioactive compounds in MKSO were maintained in a stable condition upon accelerated storage. Microencapsulation was shown to protect kenaf seed oil against oxidation, as well as preventing the degradation and/or loss of bioactive compounds in kenaf seed oil.

Fatty acid composition in double and multilayered microcapsules of ω-3 as affected by storage conditions and type of emulsions

“…The n-6/n-3 ratio had an opposite behavior in DM (where it increased with the storage temperature) and in MM (where it decreased after storage, and this decrease was the same at 4 and 20 ºC). This contrast with other studies that have found no modification of the fatty acid composition of formulas with high content of PUFAs after 30 days of storage at 22 ºC (Zunin, Boggia, Turrini, & Leardi, 2015) or 24 days of storage at 65 ºC (Ng, Jessie, Tan, Long, & Nyam, 2013). However, differences in the composition of the oil and the capsules should be taken into account.…”

“…As a consequence, SFA/UFA and MUFA/PUFA ratios increased with the storage temperature. This decrease of PUFA could be a consequence of the ease breakage of double bond of these fatty acids, due to the high susceptibility of these fatty acids to oxidation (Ng, Jessie, Tan, Long, & Nyam, 2013). On the contrary, the level of MUFA remained unchanged in the case of MM and DM after a month of refrigeration storage with respect to initial time, and in the case of MM after a month of room storage with respect to initial time.…”

Chemistry, phytotechnology, pharmacology and nutraceutical functions of kenaf ( Hibiscus cannabinus L.) and roselle ( Hibiscus sabdariffa L.) seed oil: An overview

“…However, to overcome the toxicity and safety issues modern phyto-extraction techniques like sonication, soxhlet, supercritical carbon dioxide fluid extraction (SFE) etc. have been extensively utilized for extracting kenaf seed oil (Wang and Weller, 2006;Chan and Ismail, 2009;Foo et al, 2011;Mariod et al, 2011;Yazan et al, 2011;Ghafar et al, 2013;Ng et al, 2013). In recent time, soxhlet and SFE methods have extensively been used for extraction of kenaf seed oil with enriched fatty acids and antioxidants (Chan and Ismail, 2009;Nyam et al, 2010;Mariod et al, 2011;Ng et al, 2013).…”

In-vitro evaluation of kenaf seed oil in chitosan coated-high methoxyl pectin-alginate microcapsules

“…The potential uses of kenaf seeds as a source of edible oil is often overlooked when considering kenaf as a fiber and feed crop (Coetzee et al, 2008). Kenaf seed oil can be considered nutritionally healthy because of the high concentration of polyunsaturated fatty acids and antioxidant activity (Nyam et al, 2009;Ng et al, 2013;Sara et al, 2013).…”