|
EXTRACTION OF CMC FROM CORNCOB AND ITS APPLICATION AS COATING AGENT ON MANGO FRUIT |
|---|---|
| รหัสดีโอไอ | |
| Creator | Sujitra Ruengdechawiwat |
| Title | EXTRACTION OF CMC FROM CORNCOB AND ITS APPLICATION AS COATING AGENT ON MANGO FRUIT |
| Contributor | Pornwipa Sanawong, Sutjaritpan Boonmee |
| Publisher | Pibulsongkram Rajabhat University |
| Publication Year | 2566 |
| Journal Title | Life Sciences and Environment Journal |
| Journal Vol. | 24 |
| Journal No. | 2 |
| Page no. | 327-337 |
| Keyword | Carboxymethyl cellulose, Corncob, Coating agent |
| URL Website | https://ph01.tci-thaijo.org/index.php/psru/index |
| Website title | Life Sciences and Environment Journal |
| ISSN | 2773-9201 |
| Abstract | Cellulose is converted by etherification under suitable conditions. and then finally purified. Then, the extracted CMC was used as a film for coating the mango fruit. Under the optimized reaction conditions, the extracted CMC had a degree of substitution (DS) of 0.12. The results showed that the FTIR spectra of the obtained CMCs exhibited strong absorption bands in the range of 1600-1700 cm-1, which was related to the carbonyl group (C=O) vibration stretching absorption. The absorption in 1400–1450 cm-1 region is due to symmetrical deformations of CH2 groups. Strong absorption bands in the range of 1200–1000 cm-1 due to the stretching vibration of the ether (-O-). The FT-IR results confirmed CMC modification. Thermal analysis, CMC had a melting temperature in the range of 163.2-181.4oC. In degradation, CMC can be completely decomposed within 72 hrs by soil embedding method. Water vapor permeability (WVP) test, showed that CMC and glycerol affected the film properties. Increasing CMC content, water vapor permeability (WVP) decreased. In contrast, with increasing glycerol, WVP. We conclude that, fruits coated with the obtained CMC from corncob could maintain quality of Nam Dok Mai Mango (Mangifera Indica Linn.). |
