Watermelon rind powder (WRP) is a rich source of dietary fiber and bioactive compounds, hence it could be used in the development of functional foods such as cookies. Different replacement levels of wheat flour with either WRP or hi-maize starch (HMS) (10-30%) on the quality of the cookies made were studied. The dietary fiber content in the cookies increased with incorporation of increasing level of either WRP or HMS. Increasing the proportion of the WRP in the cookie making resulted in an increase in the total phenolic content, 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity, and the ferric reducing antioxidant power. Using up to 20% of WRP and 30% of HMS in the cookie making promotes: increase in dietary fiber, decrease in predicted glycemic index to medium (for WRP) and low (for HMS) levels, and improving the antioxidant activity. These changes still produce an acceptable cookie.
To cite this article: Petchwattana, N. et al. (2019). 3D printing filaments prepared from modified poly(lactic acid)/teak wood flour composites: An investigation on the particle size effects and silane coupling agent compatibilisation.
The effect of active chlorine concentrations (1-5%) on the properties of jackfruit seed starch was investigated. Both the carbonyl and carboxyl contents of the oxidized starches generally increased with progressive increases in the active chlorine concentration. No evidences of alteration in the morphology and X-ray diffraction pattern were observed after oxidation, while the decrease in relative crystallinity was found. The swelling power of the oxidized starch tended to decrease with the active chlorine levels, particularly at a low level of active chlorine (1-3%). No significant differences in the peak temperature (Tp) and the end temperature (Te) were found between the native and the oxidized starches, while the oxidized starches had lower onset temperatures (To). Parameters, such as pasting temperature, peak viscosity, and setback, decreased with the concentration of active chlorine. In addition, lower syneresis and turbidity were found in all oxidized starches during refrigerated storage compared to the native starch.
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