TY  - JOUR
AV  - none
N2  - Roselle petals contain high anthocyanins, a good antioxidant, and natural dark red colorants. Anthocyanins help in reducing risks of cardiovascular disease and colon cancer. But anthocyanins are easily affected by extraction process. Therefore, this study proposed a new method of extracting anthocyanins using ultrasonic-assisted extraction (UAE) from roselle petals with three extraction parameters. The extraction parameters are sampleâ??s particle size (0.125, 0.375 and 0.625 mm), solvent to solid ratio (10:1, 15:1 and 20:1 mL solvent/g solid) and extraction time (5, 10 and 15 min). The optimization of process parameters aims to achieve the highest extraction yield of extract, Total Anthocyanins Content (TAC), and Antioxidant Activity (AA). The results show that 0.125 mm of particle size, 10:1 mL solvent/g solid, 15 min of extraction obtained the best percent mass yield (64.72), TAC (70.97 mg/L), and AA (90.05). Method-wise, this study showed that the ultrasonic-assisted extraction gives better quality of roselle petals extracts than the maceration extraction. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
N1  - cited By 6; Conference of 3rd International Conference on Separation Technology, ICoST 2020 ; Conference Date: 15 August 2020 Through 16 August 2020; Conference Code:261289
KW  - Anthocyanins; Extraction; Particle size; Solvents
KW  -  Antioxidant activities; Extraction method; Extraction parameters; Hibiscus sabdarifum; Optimisations; Particles sizes; Roselle; Roselle petal; Total anthocyanin contents; Ultrasonic-assisted extractions
KW  -  Antioxidants
ID  - scholars15705
TI  - Optimization of Anthocyanins Extracts from Roselle (Hibiscus sabdarifa) Petals Using Ultrasonic-Assisted Extraction Method
SP  - 295
Y1  - 2021///
SN  - 21954356
PB  - Springer Science and Business Media Deutschland GmbH
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111377475&doi=10.1007%2f978-981-16-0742-4_21&partnerID=40&md5=550ed11a6d305fe9088f726340ac2ff1
JF  - Lecture Notes in Mechanical Engineering
A1  - Redzuan, S.
A1  - Ho, C.Y.
A1  - Idham, Z.
A1  - Yusuf, S.
A1  - Putra, N.R.
A1  - Yunus, M.A.C.
A1  - Mansor, S.
A1  - Ruslan, M.S.H.
EP  - 309
ER  -