Tailoring mechanical properties and degradation rate of maxillofacial implant based on Sago Starch/Polylactid Acid Blend, HELIYON, https://doi.org/10.1016/j.heliyon.2021.e08600. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

A biocomposite system incorporating sago starch and nano-chitosan (SS/NCS) were developed by casting and solvent evaporation method. The purpose of this experiment for characterization of the film based on sago starch (SS) with a variation of the addition of nano-chitosan (0, 2, 4, 6 and 8% by weight starch) and analyze its effect on mechanical properties, thermal properties, and morphological characteristics of mixed film (SS / NCS). Possible intermolecular interactions between SS and NCS were confirmed by Fourier-transform infrared spectroscopy (FTIR) and the reduction of crystallinity in XRD. The experimental data showed that the incorporation of nano-chitosan resulted in an increase in film solubility, tensile strength and elongation at break and a decrease in Young’s modulus. Elongation at break of the (SS/NCS) films increased with increasing of nano-chitosan concentration. The water vapor permeability (WVP) of (SS/NCS) films increased with an increase of chitosan concentration and the same tendency observed for the moisture content. Based on thermogravimetric analysis (TGA), the percentage of nano-chitosan content in starch-based films can increase thermal stability.. Scanning electron microscope (SEM) shows the surface morphology and interface of NCS/SS composite films and suggests sufficient homogenization of starch and chitosan in biodegradable composite films.

The accuracy and speed of preparation of raw materials was one of the keys to the success of a food processing business during the Pandemic and digital era. Mini multipurpose grating machine that was effective, efficient and hygienic was a tool for processed food production needed by micro and small scale businesses to win the competition in the era of on-line business. The purpose of this research was to design a mini multipurpose grating machine that can be used by micro and small scale processed food producers with a compact and simple design, made of food grade stainless steel material, and easy to maintain. This design produced a mini multipurpose grating with specifications of 1,550 mm in length, 900 mm in width, 2,100 mm in height and ±3 kg in weight. The small main drive motor was the advantage of the machine so that it is light and compact which can be placed under the grater cylinder. The results of the performance test showed that the working capacity of grating for coconut was 2.56 kg/h with an efficiency of 95.54%. The mini multipurpose grater machine was easy to carry and can be used for coconut, cassava, sweet potato, carrot, ginger and other similar commodities, which were used as raw materials for processed food on a micro and small scale.

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