Jeerayut Hongwiangjan

• Doctor of Engineering
• King Mongkut's Institute of Technology Ladkrabang

Near infrared (NIR) spectroscopy model was developed for detecting pepper powder adulterated with rice powder. The adulterated pepper powder samples were prepared by mixing rice powders with pure pepper powder to 19 levels of concentrations (w/w) from 5-95%w/w. Two hundred ten NIR spectra of pure and adulterant pepper powders were recorded using Fo...

Recently, sugarcane harvesters have been increasingly used in sugarcane harvesting. Loading trucks were traveling along the harvesters to collect the harvested cane billets. Since cane harvesters are expensive machines, there is an idea of collaborative farming by combining multiple fields from different owners to reduce operating costs and time. H...

This research aims to investigate chemometric approaches for improvement of near infrared spectra of white pepper which was affected by different particle size. White pepper samples obtained from Chanthaburi province. The samples of pepper ball and pepper powder (pounded and sieved with 50, 100 and 200 mesh) were used in this study. Near infrared s...

In this study, the effect of drying temperature (50-110°C) on hot air drying characteristics of coconut residue was investigated. The drying time and drying rate (DR) were in the ranges of 540-100 min and 0.0048-0.0182 g water/g dry matter·min at the drying temperature of 50-110°C, respectively. Six drying models (Lewis, Page, Henderson and Pabis,...