| Titre : |
Natural colorant extraction from Cinnamomum camphora tree leaves of different maturities and its ultrasonic-assisted extraction process |
| Type de document : |
texte imprimé |
| Auteurs : |
Kang Gong, Auteur ; Yi Pan, Auteur ; Luqman Jameel Rather, Auteur ; Wuchao Wang, Auteur ; Zhou Qi, Auteur ; Tonghua Zhang, Auteur ; Qing Li, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 312-321 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Camphrier et constituants Le camphrier ou arbre à camphre (Cinnamomum camphora (L.) J. Presl, 1825) est une espèce d'arbres de la famille du laurier (Lauraceae) dont on extrait le camphre par distillation de son bois, dit "bois de Ho".
Colorants végétaux
Extraction (chimie)
Extraction par ultrasons
|
| Index. décimale : |
667.2 Colorants et pigments |
| Résumé : |
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. |
| Note de contenu : |
- EXPERIMENTAL : Collection and preparation of the leaves - Extraction equipment and condition - Extracting solvents - Extraction process
- RESULTS AND DISCUSSION : Extraction performance - Ultrasonic-enhanced extraction process - Ethanol extraction - Acid and alkaline extraction Enzyme extraction - Colour yield of camphor tree leaves with different extracting solvents and extraction methods |
| DOI : |
10.1111/cote.12406 |
| En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12406 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32834 |
in COLORATION TECHNOLOGY > Vol. 135, N° 4 (08/2019) . - p. 312-321
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