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Natural colorant extraction from Cinnamomum camphora tree leaves of different maturities and its ultrasonic‐assisted extraction process
Author(s) -
Gong Kang,
Pan Yi,
Rather Luqman Jameel,
Wang Wuchao,
Zhou Qi,
Zhang Tonghua,
Li Qing
Publication year - 2019
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/cote.12406
Subject(s) - extraction (chemistry) , cellulase , chemistry , solvent , aqueous solution , yield (engineering) , sodium carbonate , chromatography , acetic acid , pulp and paper industry , sodium , materials science , organic chemistry , enzyme , engineering , metallurgy
This study investigated natural colorant extraction from camphor tree leaves using a green and effective process. Ethanol, acetic acid, aqueous sodium carbonate and an aqueous solution of cellulase enzyme were used to examine the extraction performance, with and without the assistance of ultrasonics. Results showed that when subjected to changes in frequency and extraction time, ultrasonics is able to accelerate the extraction process and achieve a better yield for chlorophyll and anthocyanin extraction from fresh leaves compared with a traditional heating bath at similar temperatures. However, when an alkaline solvent was used to extract dark brown colorant from the old leaves, a traditional heating bath was found to be more effective than ultrasonic extraction. Cellulase enzyme failed to show its effectiveness in this study when serving as a colorant‐extracting solvent, regardless of the use of ultrasonics.