不同干燥方式对玫瑰茄水提物成分及活性的影响

doi:10.7506/spkx1002-6630-201321010

食品科学 ›› 2013, Vol. 34 ›› Issue (21): 47-50.doi: 10.7506/spkx1002-6630-201321010

不同干燥方式对玫瑰茄水提物成分及活性的影响

涂宗财1,2，张璆1，王辉1，张露1，沙小梅1，陈丽莉1，张秋婷1，张兰1

1.南昌大学食品科学与技术国家重点实验室，江西南昌 330047；2.江西师范大学生命科学学院，江西南昌 330022

收稿日期:2012-09-18 修回日期:2013-09-13 出版日期:2013-11-15 发布日期:2013-10-28
通讯作者: 涂宗财 E-mail:tuzc_mail@yahoo.com.cn
基金资助:
国家自然科学基金项目(21276118)

Effect of Drying Methods on Chemical Composition and Bioactivity of Aqueous Extract from Roselle

TU Zong-cai1,2，ZHANG Qiu1，WANG Hui1，ZHANG Lu1，SHA Xiao-mei1，CHEN Li-li1，ZHANG Qiu-ting1，ZHANG Lan1

1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China；
2. College of Life Science, Jiangxi Normal University, Nanchang 330022, China

Received:2012-09-18 Revised:2013-09-13 Online:2013-11-15 Published:2013-10-28
Contact: tuzongcai zong-caiTU E-mail:tuzc_mail@yahoo.com.cn

摘要/Abstract

摘要：

通过比较热风干燥和喷雾干燥的不同干燥温度及冷冻干燥对玫瑰茄水提物(aqueous extraction fromroselle，AER)中活性成分含量及其抗氧化活性的影响，确定AER的最佳干燥方法。结果表明：真空冷冻干燥的AER中总黄酮、总多酚、花青素和多糖含量分别为(85.24±1.51)μg/mL、(188.88±0.95)μg/mL、(6.51±0.05)μg/mL、(0.850±0.043)mg/mL；ABTS+·清除力、NO2－清除力和还原能力分别为(28.92±1.25)%、(84.78±4.24)%和0.713±0.001，均高于热风干燥和喷雾干燥，喷雾干燥的样品质量优于热风干燥。综合样品的活性成分含量和抗氧化活性来看，真空冷冻干燥是AER的最佳干燥方法，喷雾干燥次之，热风干燥最差。干燥方法和温度对AER活性成分含量和抗氧化活性有较大的影响。

关键词: 玫瑰茄水提物, 干燥方式, 活性成分, 抗氧化活性

Abstract:

This study aimed to investigate the impacts of different drying methods including spray drying, hot air-drying at
different temperatures and freeze-drying on the chemical composition and antioxidant activity of aqueous extracts from roselle
(AER) so as to obtain the optimum drying method. The contents of flavonoids, polyphenols, anthocyanidins and polysaccharides
from AER from freeze-dried samples were (85.24 ± 1.51) μg/mL, (188.88 ± 0.95) μg/mL, (6.51 ± 0.05) μg/mL, (0.850 ±
0.043) mg/mL, respectively. The antioxidant activity showed that the radical scavenging activity against ABTS+• and
NO2－ and the reducing power were (28.92 ± 1.25)%, (84.78 ± 4.24)% and 0.713 ± 0.001, respectively, for freeze-drying
samples which were higher than those of spray dried and hot air-dried samples. The efficacy of spray drying was shown to
be better than that of hot air-drying. Considering the active components and antioxidant activity, the best method to dry AER
was freeze-drying followed by spray drying and hot air-drying. Drying temperature and method demonstrated significant
impact on the active constituents and antioxidant ability.

Key words: aqueous extracts from roselle, drying methods, active constituents, antioxidant properties

中图分类号:

TS201.1

涂宗财1,2，张璆1，王辉1，张露1，沙小梅1，陈丽莉1，张秋婷1，张兰1. 不同干燥方式对玫瑰茄水提物成分及活性的影响[J]. 食品科学, 2013, 34(21): 47-50.

TU Zong-cai1,2，ZHANG Qiu1，WANG Hui1，ZHANG Lu1，SHA Xiao-mei1，CHEN Li-li1，ZHANG Qiu-ting1，ZHANG Lan1. Effect of Drying Methods on Chemical Composition and Bioactivity of Aqueous Extract from Roselle[J]. FOOD SCIENCE, 2013, 34(21): 47-50.

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不同干燥方式对玫瑰茄水提物成分及活性的影响

Effect of Drying Methods on Chemical Composition and Bioactivity of Aqueous Extract from Roselle

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