Green Tea Extract Enrichment: Mechanical and Physicochemical Properties Improvement of Rice Starch-Pectin Composite Film
The effects of green tea extract (GTE) at varying concentrations (0.000, 0.125, 0.250, 0.500, and 1.000%, <i>w/v</i>) on the properties of rice-starch-pectin (RS-P) blend films were investigated. The results showed that GTE addition enhanced (<i>p</i> < 0.05) the antioxida...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/13/2696 |
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| author | Wantida Homthawornchoo Jaejoon Han Pimonpan Kaewprachu Orapan Romruen Saroat Rawdkuen |
| author_facet | Wantida Homthawornchoo Jaejoon Han Pimonpan Kaewprachu Orapan Romruen Saroat Rawdkuen |
| author_sort | Wantida Homthawornchoo |
| collection | DOAJ |
| description | The effects of green tea extract (GTE) at varying concentrations (0.000, 0.125, 0.250, 0.500, and 1.000%, <i>w/v</i>) on the properties of rice-starch-pectin (RS-P) blend films were investigated. The results showed that GTE addition enhanced (<i>p</i> < 0.05) the antioxidation properties (i.e., total phenolic content, DPPH radical scavenging activity, and ferric reducing antioxidant power) and thickness of the RS-P composite film. The darker appearance of the RS-T-GTE blend films was obtained in correspondence to the lower <i>L</i>* values. However, the <i>a</i>* and <i>b</i>* values were higher toward red and yellow as GTE increased. Though GTE did not significantly alter the film solubility, the moisture content and the water vapor permeability (WVP) of the resulting films were reduced. In addition, the GTE enrichment diminished the light transmission in the UV-Visible region (200–800 nm) and the transparency of the developed films. The inclusion of GTE also significantly (<i>p</i> < 0.05) lowered the tensile strength (TS) and elongation at break (EAB) of the developed film. The FT-IR spectra revealed the interactions between RS-P films and GTE with no changes in functional groups. The antimicrobial activity against <i>Staphylococcus aureus</i> (TISTR 764) was observed in the RS-P biocomposite film with 1% (<i>w/v</i>) GTE. These results suggested that the RS-P-GTE composite film has considerable potential for application as active food packaging. |
| first_indexed | 2024-03-09T12:37:41Z |
| format | Article |
| id | doaj.art-320c51a96d86492080d625936cb3c70f |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T12:37:41Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-320c51a96d86492080d625936cb3c70f2023-11-30T22:21:50ZengMDPI AGPolymers2073-43602022-06-011413269610.3390/polym14132696Green Tea Extract Enrichment: Mechanical and Physicochemical Properties Improvement of Rice Starch-Pectin Composite FilmWantida Homthawornchoo0Jaejoon Han1Pimonpan Kaewprachu2Orapan Romruen3Saroat Rawdkuen4Food Science and Technology Program, School of Agro-Industry, Mae Fah Luang University, Chiang Rai 57100, ThailandDepartment of Food Bioscience and Technology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, KoreaCollege of Maritime Studies and Management, Chiang Mai University, Samut Sakhon 74000, ThailandFood Science and Technology Program, School of Agro-Industry, Mae Fah Luang University, Chiang Rai 57100, ThailandFood Science and Technology Program, School of Agro-Industry, Mae Fah Luang University, Chiang Rai 57100, ThailandThe effects of green tea extract (GTE) at varying concentrations (0.000, 0.125, 0.250, 0.500, and 1.000%, <i>w/v</i>) on the properties of rice-starch-pectin (RS-P) blend films were investigated. The results showed that GTE addition enhanced (<i>p</i> < 0.05) the antioxidation properties (i.e., total phenolic content, DPPH radical scavenging activity, and ferric reducing antioxidant power) and thickness of the RS-P composite film. The darker appearance of the RS-T-GTE blend films was obtained in correspondence to the lower <i>L</i>* values. However, the <i>a</i>* and <i>b</i>* values were higher toward red and yellow as GTE increased. Though GTE did not significantly alter the film solubility, the moisture content and the water vapor permeability (WVP) of the resulting films were reduced. In addition, the GTE enrichment diminished the light transmission in the UV-Visible region (200–800 nm) and the transparency of the developed films. The inclusion of GTE also significantly (<i>p</i> < 0.05) lowered the tensile strength (TS) and elongation at break (EAB) of the developed film. The FT-IR spectra revealed the interactions between RS-P films and GTE with no changes in functional groups. The antimicrobial activity against <i>Staphylococcus aureus</i> (TISTR 764) was observed in the RS-P biocomposite film with 1% (<i>w/v</i>) GTE. These results suggested that the RS-P-GTE composite film has considerable potential for application as active food packaging.https://www.mdpi.com/2073-4360/14/13/2696green tea extractrice starchpectinactive filmantioxidant |
| spellingShingle | Wantida Homthawornchoo Jaejoon Han Pimonpan Kaewprachu Orapan Romruen Saroat Rawdkuen Green Tea Extract Enrichment: Mechanical and Physicochemical Properties Improvement of Rice Starch-Pectin Composite Film Polymers green tea extract rice starch pectin active film antioxidant |
| title | Green Tea Extract Enrichment: Mechanical and Physicochemical Properties Improvement of Rice Starch-Pectin Composite Film |
| title_full | Green Tea Extract Enrichment: Mechanical and Physicochemical Properties Improvement of Rice Starch-Pectin Composite Film |
| title_fullStr | Green Tea Extract Enrichment: Mechanical and Physicochemical Properties Improvement of Rice Starch-Pectin Composite Film |
| title_full_unstemmed | Green Tea Extract Enrichment: Mechanical and Physicochemical Properties Improvement of Rice Starch-Pectin Composite Film |
| title_short | Green Tea Extract Enrichment: Mechanical and Physicochemical Properties Improvement of Rice Starch-Pectin Composite Film |
| title_sort | green tea extract enrichment mechanical and physicochemical properties improvement of rice starch pectin composite film |
| topic | green tea extract rice starch pectin active film antioxidant |
| url | https://www.mdpi.com/2073-4360/14/13/2696 |
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