TY - JOUR
T1 - Microencapsulation of Gac oil
T2 - Optimisation of spray drying conditions using response surface methodology
AU - Kha, Tuyen C.
AU - Nguyen, Minh H.
AU - Roach, Paul D.
AU - Stathopoulos, Costas E.
N1 - Funding Information:
The authors acknowledge the University of Newcastle, Australia for the financial support through a PhD scholarship for Tuyen Kha. The authors would also like to thank the Faculty of Food Science and Technology, Nong Lam University, Viet Nam for their equipment support.
PY - 2014/9
Y1 - 2014/9
N2 - The objective of this study was to optimise the spray drying conditions for the encapsulation of Gac oil using response surface methodology. Results indicated that the corresponding response surface model was sufficient to describe and predict encapsulation efficiencies (EEs) in terms of the oil, β-carotene, lycopene, encapsulation yield (EY), moisture content (MC), water solubility index (WSI) and peroxide value (PV) with R2 of 0.92, 0.91, 0.89, 0.85, 0.89, 0.98 and 0.97, respectively. Under optimal conditions (inlet and outlet temperatures of 154 and 80°C), the response variables including the EEs of the oil, β-carotene, lycopene, EY, MC, WSI and PV were predicted and validated as 87.22%, 82.76%, 84.29%, 52.78%, 4.90%, 90.29% and 4.06meq/kg, respectively. Furthermore, physicochemical, reconstitution and colour properties of the optimally encapsulated powder were also determined. It was concluded that this powder containing high content of unsaturated fatty acids, β-carotene and lycopene, and having the attractive red-yellow colour can be used as nutrient supplement and natural food colourant.
AB - The objective of this study was to optimise the spray drying conditions for the encapsulation of Gac oil using response surface methodology. Results indicated that the corresponding response surface model was sufficient to describe and predict encapsulation efficiencies (EEs) in terms of the oil, β-carotene, lycopene, encapsulation yield (EY), moisture content (MC), water solubility index (WSI) and peroxide value (PV) with R2 of 0.92, 0.91, 0.89, 0.85, 0.89, 0.98 and 0.97, respectively. Under optimal conditions (inlet and outlet temperatures of 154 and 80°C), the response variables including the EEs of the oil, β-carotene, lycopene, EY, MC, WSI and PV were predicted and validated as 87.22%, 82.76%, 84.29%, 52.78%, 4.90%, 90.29% and 4.06meq/kg, respectively. Furthermore, physicochemical, reconstitution and colour properties of the optimally encapsulated powder were also determined. It was concluded that this powder containing high content of unsaturated fatty acids, β-carotene and lycopene, and having the attractive red-yellow colour can be used as nutrient supplement and natural food colourant.
KW - Carotenoids
KW - Gac oil
KW - Microencapsulation
KW - Response surface methodology
KW - Spray drying
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UR - http://www.scopus.com/inward/citedby.url?scp=84904638981&partnerID=8YFLogxK
U2 - 10.1016/j.powtec.2014.05.053
DO - 10.1016/j.powtec.2014.05.053
M3 - Article
AN - SCOPUS:84904638981
SN - 0032-5910
VL - 264
SP - 298
EP - 309
JO - Powder Technology
JF - Powder Technology
ER -