Nuclear chemistry

Starch

Engineering

Biology

Materials science

Elongation

Ultimate tensile strength

Botany

Chemical engineering

Food science

pH indicator

Swelling

Food packaging

Surface roughness

Organic chemistry

Potato starch

Composite material

Anthocyanin

Chemistry

Fourier transform infrared spectroscopy

Thermal stability

Foods

In food packaging, smart indicator films based on natural resources have greatly attracted researchers to minimize the environmental issues as well as to satisfy consumer preferences for food safety. In this research, pH-sensitive films were prepared using purple-fleshed sweet potato starch (SPS) and sweet potato peel (SPP). Two categories of the film (i) SPS and (ii) SPS/SPP, were fabricated via solvent casting technique, incorporating different concentrations of commercial purple sweet potato anthocyanin (CA) at 0%, 1%, 1.5%, and 2% (

Characterization of Anthocyanin Associated Purple Sweet Potato Starch and Peel-Based pH Indicator Films