Effects of Oil-Droplet Diameter and Dextrose Equivalent of Maltodextrin on the Surface-Oil Ratio of Microencapsulated Fish Oil by Spray Drying

被引:9
作者
Abd Ghani, Asmaliza [1 ,2 ]
Adachi, Sae [3 ]
Sato, Kohei [3 ]
Shiga, Hirokazu [4 ]
Iwamoto, Syouma [3 ]
Neoh, Tze Loon [3 ]
Adachi, Shuji [4 ]
Yoshii, Hidefumi [1 ,3 ]
机构
[1] Ehime Univ, United Grad Sch Agr Sci, Appl Bioresource Sci Dept, 3-5-7 Tarumi, Matsuyama, Ehime 7908566, Japan
[2] Univ Sultan Zainal Abidin, Fac Bioresources & Food Ind, Sch Food Ind, Kampus Besut, Besut 22200, Terengganu, Malaysia
[3] Kagawa Univ, Dept Appl Biol Sci, 2393 Ikenobe, Miki, Kagawa 7610795, Japan
[4] Kyoto Gakuen Univ, Fac Bioenvironm Sci, Dept Agr & Food Technol, 1-1 Ohtani,Nanjo Sogake Cho, Kameoka, Kyoto 6218555, Japan
基金
日本科学技术振兴机构;
关键词
Fish Oil; Dextrose Equivalent; Spray Drying; Encapsulation Efficiency; Surface-Oil Ratio; OXIDATIVE STABILITY; DRIED EMULSIONS; D-LIMONENE; POWDER; ENCAPSULATION; IMPACT; SIZE; PROTEIN; STORAGE; DAIRY;
D O I
10.1252/jcej.17we048
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Encapsulation effciency is affected by several parameters such as oil-droplet diameter, solid and oil contents, as well as by the processing conditions of spray drying. The surface-oil ratio is the most important parameter that estimates the shelf life of fish oil in spray-dried powders. In the present study, sodium caseinate (3 wt%), maltodextrin (DE = 8, 11, 19, 25, and 40) as the wall material, and fish oil as the core material were used to form spray-dried powders with 30, 40, 50 and 60 wt% of oil load of the total solid content. The oil load is expressed as a weight percentage of additional oil to the total solid content. Feed emulsions were prepared using a rotor-stator homogenizer at 8000 rpm and/or a high-pressure homogenizer at 20 or 100 MPa. The effects of oil-droplet diameter and particle diameter on the surface-oil ratio and the encapsulation effciency of emulsified spray-dried fish oil were investigated. The surface-oil ratio was remarkably increased when the ratio E = (d(e)/d(p)) of the average reconstituted oil-droplet diameter (de) to the average particle diameter (d(p)) was higher than 0.01. The surface-oil ratio was defined as the weight ratio of surface oil to total oil in the powder. The encapsulation effciency y was related to E by the equation y = (1-2E)(3). The oil-droplet diameter might affect the stability of fish oil in spray-dried powders.
引用
收藏
页码:799 / 806
页数:8
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