Eco-Friendly Extraction, Structure, and Gel Properties of ι-Carrageenan Extracted Using Ca(OH)<sub>2</sub>
An eco-friendly method for ι-carrageenan extraction from seaweed <i>Eucheuma denticulatum</i> through boiling and using a low concentration of Ca(OH)<sub>2</sub> is reported. Compared to the traditional method of ι-carrageenan extraction using NaOH, the reported method using...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Marine Drugs |
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| Online Access: | https://www.mdpi.com/1660-3397/20/7/419 |
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| author | Feng Jiang Yao Liu Qiong Xiao Fuquan Chen Huifen Weng Jun Chen Yonghui Zhang Anfeng Xiao |
| author_facet | Feng Jiang Yao Liu Qiong Xiao Fuquan Chen Huifen Weng Jun Chen Yonghui Zhang Anfeng Xiao |
| author_sort | Feng Jiang |
| collection | DOAJ |
| description | An eco-friendly method for ι-carrageenan extraction from seaweed <i>Eucheuma denticulatum</i> through boiling and using a low concentration of Ca(OH)<sub>2</sub> is reported. Compared to the traditional method of ι-carrageenan extraction using NaOH, the reported method using Ca(OH)<sub>2</sub> had the advantages of using 93.3% less alkali and 86.8% less water, having a 25.0% shorter total extraction time, a 17.6% higher yield, and a 43.3% higher gel strength of the product. In addition, we evaluated the gel properties and structures of ι-carrageenan products extracted by Ca(OH)<sub>2</sub> (Ca-IC) and NaOH (Na-IC). The Fourier transform infrared spectroscopy results showed that the structures of Ca-IC and Na-IC did not change remarkably. The results of the thermogravimetric analysis and differential scanning calorimetry showed that Ca-IC had the same thermal stability as Na-IC. The results of the textural analysis showed that Ca-IC had a higher hardness and better chewiness compared to Na-IC. Rheological results indicated that Ca-IC and Na-IC exhibited shear-thinning and non-Newtonian fluid properties, whereas the viscosity of Ca-IC was less than that of Na-IC. In conclusion, this new method of ι-carrageenan extraction using Ca-IC is markedly better and yields higher quality carrageenan than the conventional method of using Na-IC. |
| first_indexed | 2024-03-09T10:15:13Z |
| format | Article |
| id | doaj.art-3409d98e4c9b4cb2804d33554bfb09d8 |
| institution | Directory Open Access Journal |
| issn | 1660-3397 |
| language | English |
| last_indexed | 2024-03-09T10:15:13Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Marine Drugs |
| spelling | doaj.art-3409d98e4c9b4cb2804d33554bfb09d82023-12-01T22:23:40ZengMDPI AGMarine Drugs1660-33972022-06-0120741910.3390/md20070419Eco-Friendly Extraction, Structure, and Gel Properties of ι-Carrageenan Extracted Using Ca(OH)<sub>2</sub>Feng Jiang0Yao Liu1Qiong Xiao2Fuquan Chen3Huifen Weng4Jun Chen5Yonghui Zhang6Anfeng Xiao7College of Food and Biological Engineering, Jimei University, Xiamen 361021, ChinaCollege of Food and Biological Engineering, Jimei University, Xiamen 361021, ChinaCollege of Food and Biological Engineering, Jimei University, Xiamen 361021, ChinaCollege of Food and Biological Engineering, Jimei University, Xiamen 361021, ChinaCollege of Food and Biological Engineering, Jimei University, Xiamen 361021, ChinaCollege of Food and Biological Engineering, Jimei University, Xiamen 361021, ChinaCollege of Food and Biological Engineering, Jimei University, Xiamen 361021, ChinaCollege of Food and Biological Engineering, Jimei University, Xiamen 361021, ChinaAn eco-friendly method for ι-carrageenan extraction from seaweed <i>Eucheuma denticulatum</i> through boiling and using a low concentration of Ca(OH)<sub>2</sub> is reported. Compared to the traditional method of ι-carrageenan extraction using NaOH, the reported method using Ca(OH)<sub>2</sub> had the advantages of using 93.3% less alkali and 86.8% less water, having a 25.0% shorter total extraction time, a 17.6% higher yield, and a 43.3% higher gel strength of the product. In addition, we evaluated the gel properties and structures of ι-carrageenan products extracted by Ca(OH)<sub>2</sub> (Ca-IC) and NaOH (Na-IC). The Fourier transform infrared spectroscopy results showed that the structures of Ca-IC and Na-IC did not change remarkably. The results of the thermogravimetric analysis and differential scanning calorimetry showed that Ca-IC had the same thermal stability as Na-IC. The results of the textural analysis showed that Ca-IC had a higher hardness and better chewiness compared to Na-IC. Rheological results indicated that Ca-IC and Na-IC exhibited shear-thinning and non-Newtonian fluid properties, whereas the viscosity of Ca-IC was less than that of Na-IC. In conclusion, this new method of ι-carrageenan extraction using Ca-IC is markedly better and yields higher quality carrageenan than the conventional method of using Na-IC.https://www.mdpi.com/1660-3397/20/7/419ι-carrageenancalcium hydroxidecleaner productiongel characteristics |
| spellingShingle | Feng Jiang Yao Liu Qiong Xiao Fuquan Chen Huifen Weng Jun Chen Yonghui Zhang Anfeng Xiao Eco-Friendly Extraction, Structure, and Gel Properties of ι-Carrageenan Extracted Using Ca(OH)<sub>2</sub> Marine Drugs ι-carrageenan calcium hydroxide cleaner production gel characteristics |
| title | Eco-Friendly Extraction, Structure, and Gel Properties of ι-Carrageenan Extracted Using Ca(OH)<sub>2</sub> |
| title_full | Eco-Friendly Extraction, Structure, and Gel Properties of ι-Carrageenan Extracted Using Ca(OH)<sub>2</sub> |
| title_fullStr | Eco-Friendly Extraction, Structure, and Gel Properties of ι-Carrageenan Extracted Using Ca(OH)<sub>2</sub> |
| title_full_unstemmed | Eco-Friendly Extraction, Structure, and Gel Properties of ι-Carrageenan Extracted Using Ca(OH)<sub>2</sub> |
| title_short | Eco-Friendly Extraction, Structure, and Gel Properties of ι-Carrageenan Extracted Using Ca(OH)<sub>2</sub> |
| title_sort | eco friendly extraction structure and gel properties of ι carrageenan extracted using ca oh sub 2 sub |
| topic | ι-carrageenan calcium hydroxide cleaner production gel characteristics |
| url | https://www.mdpi.com/1660-3397/20/7/419 |
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