@article{scholars15705,
            note = {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},
            year = {2021},
             doi = {10.1007/978-981-16-0742-4{$_2$}{$_1$}},
       publisher = {Springer Science and Business Media Deutschland GmbH},
         journal = {Lecture Notes in Mechanical Engineering},
           title = {Optimization of Anthocyanins Extracts from Roselle (Hibiscus sabdarifa) Petals Using Ultrasonic-Assisted Extraction Method},
           pages = {295--309},
        keywords = {Anthocyanins; Extraction; Particle size; Solvents, Antioxidant activities; Extraction method; Extraction parameters; Hibiscus sabdarifum; Optimisations; Particles sizes; Roselle; Roselle petal; Total anthocyanin contents; Ultrasonic-assisted extractions, Antioxidants},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111377475&doi=10.1007\%2f978-981-16-0742-4\%5f21&partnerID=40&md5=550ed11a6d305fe9088f726340ac2ff1},
        abstract = {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 sample{\^a}??s particle size (0.125, 0.375 and 0.625{\^A} mm), solvent to solid ratio (10:1, 15:1 and 20:1{\^A} mL solvent/g solid) and extraction time (5, 10 and 15{\^A} 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{\^A} mm of particle size, 10:1{\^A} mL solvent/g solid, 15{\^A} min of extraction obtained the best percent mass yield (64.72), TAC (70.97{\^A} 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. {\^A}{\copyright} 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.},
            issn = {21954356},
          author = {Redzuan, S. and Ho, C. Y. and Idham, Z. and Yusuf, S. and Putra, N. R. and Yunus, M. A. C. and Mansor, S. and Ruslan, M. S. H.},
            isbn = {9789811607417}
}