Karakteristik fisis bioplastik yang dibuat dari kombinasi pati tapioka dan kasein susu apkir

Abstract

This study aimed to develop bioplastic from a combination of tapioca starch and casein, as well as to determine the physical characteristics, such as thickness, density, light transmittance, and opacity. The composition of the bioplastic was made from two types of casein, namely commercial casein and rejected milk casein, with a ratio of tapioca starch and casein consisting of 4 treatment groups (4:0, 3:1, 2.5:1.5, 2:2). Each treatment was repeated 6 times. The physical characteristics data obtained were analyzed using a two-way ANOVA completely randomized design variance analysis. If there is a difference, it is continued with the Duncan multiple range test (DMRT). The results showed that the ratio of starch and casein had a very significant effect on all test parameters (P<0.01). An increase in commercial casein (CC) and rejected milk casein (EMC) increased thickness and opacity, while density and light transmittance decreased. Based on the research, bioplastic can be made with a combination of different ratios of tapioca starch and casein types with the best result were at a ratio of 2:2 which produced a thickness of 0.29 mm, light transmittance of 20.03%, opacity of 2.51%, while the density had the smallest value at 0.15 gr/cm 3 . In conclusion, rejected milk casein could be used as biomaterial to make bioplastic combined with tapioca starch.

Sifat Mekanik dan Ketebalan Bioplastik dari Kappaphycus alvarezii Menggunakan Variasi Konsentrasi Amilum dengan Pemlastis Gliserol

“…Proses gelatinasi membuat amilum yang keruh seperti susu menjadi jernih pada suhu tertentu. Lebih banyak amilum akan menambah peluang terjadinya gelatinasi sehingga akan menjadi semakin jernih ketika banyak amilum yang ditambahkan (Nugrahanto et al, 2021).…”

Sago Starch and Sodium Alginate as Natural Crosslinking for Capsule Alternatives

“…This may be due to the mixing of sodium alginate, which increases the bond density between molecules so that no cavity appears. According to research, small cavities or pores in hydrogels will increase the transmission of bioactive molecules and cell migration (Agustin & Padmawijaya, 2016;Nugrahanto et al, 2021). Figure 6e 300x magnification and 6. f 1000x magnification with 100% sodium alginate component show the result of a film surface that looks homogeneous but rougher.…”