Considering the weak gel of tapioca starch and generally incomplete gel-advancing mechanism α-amylase modification, two commercial α-amylases (named A- N-amylase) with different reaction patterns were used to improve strength cross-linked starch. SEM showed that A-amylase exhibited surface erosion pattern, compared an extensive pattern N-amylase. XRD, SAXS, HPGPC-MALLS-RI revealed mainly attack...

The use of PLA and PLA-g-AA/starch as materials for the controlled release of encapsulated PSB was evaluated. The results showed that the bacterium degraded both the PLA and the PLA-g-AA/starch composite films, resulting in cell release. Severe disruption of the film structure occurred after incubation for 60-90 d. The PLA-g-AA/starch (20 wt.-%) films were more biodegradable than those made of ...

The impact of a tapioca-based artificial diet on the developmental rate, life history parameters, and fertility was examined over five consecutive generations for the cotton bollworm, Helicoverpa armigera Hubner (Lepidoptera: Noctuidae), a highly polyphagous pest of many agricultural crops. The study showed that when fed the tapioca-based artificial diet during larval stage, larval and pupal de...

Tapioca starch, poly(lactic acid), and Cloisite NA+ nanocomposite foams, with four clay contents (1, 3, 5, 7, wt %), were prepared by melt-intercalation method. Selected structural, thermal, physical, and mechanical properties were characterized using X-ray diffraction (XRD), scanning electron microscopy, differential scanning calorimetry, and an Instron universal testing machine, respectively....

This paper describes optimization of fermentation conditions for the production of thermostable pullulanase from a new strain Bacillus cereus FDTA 13, isolated from tapioca soil. By using one-factor-at-a-time and orthogonal array method, a simple medium with effective and minimal components was optimized for maximal pullulanase production. The optimized medium containing (in g/L): starch 20, ye...

This article reports a study of the thermo-oxidation and biodegradation in the soil of low-density polyethylene/starch films (LDPE/starch) by infrared spectroscopy: Films of LDPE/Starch blends of different composition (starch content range from 0 to 15% w/w),were prepared and exposed to thermo-oxidation at different temperatures at 80, 90 and 100°C,and buried in the soil of public dump duri...

Tomato (Solanum lycopersicum L.) is very susceptible to damage and has a relatively short shelf life. The increased production of tomatoes which are not accompanied by an increase in consumption will cause large amount waste. An edible coating (EC) film could the durability thus it needed improve quality life tomatoes. EC thin layer that safe for environmentally friendly. In this study, was pre...

This study attempted to assess the influence of mechanical forces on potato, tapioca, wheat, rice, and maize starch granules. For this purpose, we used digital analysis microscopic images granules before after grinding using ImageJ software. Additionally, studied temperature size shape by drying starches for 30 min at 60 °C. Our results indicate that very rarely cause damage granules, such as b...