Microencapsulation of roselle (Hibiscus sabdariffa L.) anthocyanins: Effects of maltodextrin and trehalose matrix on selected physicochemical properties and antioxidant activities of spray-dried powder

被引:15
作者
Millinia, Bertha Ladesta [1 ]
Mashithah, Dewi [1 ]
Nawatila, Roisah [2 ]
Kartini, Kartini [1 ]
机构
[1] Univ Surabaya, Fac Pharm, Dept Pharmaceut Biol, Jl Raya Kalirungkut, Surabaya 60293, Indonesia
[2] Univ Surabaya, Fac Pharm, Dept Pharmaceut, Jl Raya Kalirungkut, Surabaya 60293, Indonesia
来源
FUTURE FOODS | 2024年 / 9卷
关键词
Maltodextrin matrix; Microencapsulation; Natural colorant; Roselle anthocyanins; Spray-drying; Trehalose matrix; NATURAL COLORANTS; STABILITY; EMULSIONS; YIELD;
D O I
10.1016/j.fufo.2024.100300
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
This research was conducted to improve the stability of roselle anthocyanins by spray-drying using a single matrix (maltodextrin) and a binary matrix (maltodextrin-trehalose = 1:1). Each matrix was added to the core material at three different ratios: 30:70, 40:60, and 50:50. The physicochemical characteristics and antioxidant activity of microencapsulated powders were compared. The process using a single matrix with a 50:50 maltodextrin-to-extract ratio (MD -3) was identified as optimal. Spray-drying yield of MD -3 was 73.6 %, significantly higher (P < 0.05) than the other formulas. Encapsulation efficiency of MD -3 was 50.28 % and the powders was light red with a non-sticky texture, 2.5 % moisture content, and its red color was stable at pH 2.6-5. Average particle size of MD -3 was 4.48 mu m with homogeneous distribution (PDI = 0.41400), spherical and amorphous particles. In the DPPH scavenging method, MD -3 powders exhibited antioxidant activity with an IC50 of 3397.55 mu g/mL. Although the addition of trehalose to maltodextrin in the binary matrix did not produce better physicochemical characteristics, it significantly (P < 0.05) improved encapsulation efficiency (66.65-76.53 %). Therefore, further exploration is necessary to determine the appropriate maltodextrin-to-trehalose ratio in microencapsulating roselle extract. These findings enable further industrial application of different matrices to encapsulate anthocyanin as well as other bioactive compounds.
引用
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页数:9
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