The purpose of this research was to analyze carotenoid content anthocyanin content phenolic compound content and the antioxidant activity by 2 2-diphenyl-1-picrylhydrazyl scavenging capacity (DPPH) and 1 10-Phenantroline (Phen). In the 3 varieties of corn milk which were the Queen Ruby Siam strain (Purple corn milk) (White corn milk) Sweet strain (Yellow corn milk). It was found that the samples of 3 types of corn milk have total carotenoid content were 0.45+0.00 0.29+0.02 and 0.68+0.00mg/l respectively. Anthocyanin content measured by pH-differential method were 2.86+0.01 1.71+0.03 and 0.80+0.01 mg/l respectively. The total amount of phenolic compounds were 12.00+0.02 10.05+0.00 and 8.62+0.09 mg/l respectively. The ability to resist free radicals by DPPH method were equal to 96.50+0.10 47.10+0.01 and 60.91+0.08 respectively. The antioxidant activity using Phen method were 133.98+0.76 111.17+0.48 and 86.61+0.98 mg/l respectively.

In order to maintain food and materials including drying products at the original dried condition silica gel can be one choice for absorbing moisture. Most silica gel is packed in an Parcel made from plastic which is difficult to naturally degrade thus causing environmental problems. This research therefore have developed packaging material from agricultural waste corn husks for absorbing moisture from food rice. From the study it was found that the corn husk paper had characteristic of smooth paper surface. When making it into a corn fiber Parcel its maximum moisture absorption from saturated humidity was 9.22±0.92% and it could absorb the moisture from the rice stored at room temperature when compared to the plastic sachet at 8.26±0.50% and 9.30±0.08% respectively. When coated with kaffir lime oil extract the corn husk Parcel had the capability in anti-fungus commonly habituated in corn husks up the concentration of 15000 ppm. It could naturally be degraded within 12 days. Therefore with these advantageous qualification the natural Parcel made of corn husk paper harboring silica is for moisture absorption as sustainable and environmental conservation material.

This research aims to develop the gypsum refractory board mixed with corn leaf coir. The 5 ratios of gypsum plaster: corn leaf coir: tap water: sodium silicate are equal to 1: 0: 1: 0.03 1: 0.100: 1: 0.03 1: 0.150: 1: 0.03 1: 0.200: 1: 0.03 1: 0.250: 1: 0.03 และ 1: 0.300: 1: 0.03 by weighted. The gypsum refractory boards were produce by casting in normal temperature (30 – 35 degree of Celsius). The properties testing of gypsum refractory board mixed with corn leaf coir followed the TIS 219-2009 standard (gypsum plasterboard) included: breaking load nail pull resistance deflection water absorption density and thermal conductivity coefficient. From the results 1: 150: 1: 0.03 is the most suitable ratio of gypsum refractory board mixed with corn leaf coir. This developed gypsum refractory boards can reduce the quantity of corn leaf waste and get the good thermal insulation gypsum refractory board products.

The purpose of this research was to construct the appropriate forecasting model for the prices of field corn in Thailand using four time series analysis methods including Box-Jenkins method Holt’s exponential smoothing method damped trend exponential smoothing method and combined forecasting method. Time series data from the website of the Office of Agricultural Economics with total 227 months during January 1997 to November 2015 are used and divided into two series. The first 216 months from January 1997 until December 2014 used to build the forecasting models and the last 11 months from January until November 2015 used to compare the forecasting methods accuracies via the criteria of the lowest mean absolute percentage error and root mean squared error. Research finding indicated that combined forecasting model was the most accurate.

Special project for product development model from clay corncob artificid cactus. The purpose is to study and develop a recipe of clay from corncob and educationto the satisfaction of the targrt group for the the product development model from clay corncob cactus. A special project has analyzed the study data were fed with a mixture of clay corncob. Then query the properties of clay corncob from five experts. Clay corncob has the best feature of artificial cactus model. Then ask the satisfaction of the target group of 50 people and analyzed by using frequency percentage and mean were as follows. The Results were what: 1. The study data for use in product development model from clay corncob cactus. The process of formulation of clay use the standard formula is essentially. The researcher have adapted the ingredients and scale is appropriate to the develop recipes clay corncob. Experts have commented that the consistent of the soil is suitable to be molded into products better. In conclusion clay corncob recipes can be used cost-effectively. To increase consumer choice and disseminate knowledge of the profession. 2. Satisfaction targeted towards product development. When you consider that The product forms The goal is satisfied overall were at the highest level with an average of 4.32 the price of satisfaction overall was high with an average of 4.04 in benefits have satisfied the most valuable. materials averaged 4.66 goals in overall satisfaction in the highest level with an average of 4.47 available from target overall satisfaction is at the highest level with an average of 4.46. Keywords: Clay Corncob Artificial Cactus Model