Jirukkakul, N., and N. Chanshotikul. “Properties of Composite Film from Tomato Extracted Pectin/ Chitosan for Use in Sausage Wrapping”. Asia-Pacific Journal of Science and Technology, vol. 24, no. 04, Dec. 2019, pp. APST-24, https://so01.tci-thaijo.org/index.php/APST/article/view/147658.