The potential health benefits attributed to mulberry leaf tea and its bioactive compounds such as antioxidant effects cancer chemoprevention and lower blood sugar levels have led to a huge increase of mulberry leaf tea products in the food market. The objectives of this research were to determine the appropriate amount of mulberry leaf tea powder Buri Rum 60 added in 4 snack products which were cook by 4 different process i.e. bread (baked) puifai (steam) peakpoon (stir) and snow lotus (no heat treatment). The Mulberry leaf tea powder was used in the ingredients for 3 levels i.e. 5 10 and 15%. Then the most preferred formula was analyzed for the nutritional values. The result showed that all 4 snacks added with Mulberry leaf tea powder at level of 10% were accepted the most. The nutritive value of these 4 snacks indicated that the moisture contents decreased while protein fiber ash energy increased significantly (p≤0.05). In comparison to the original formulas fat decreased significantly in bread and snow lotus added with mulberry leaf tea powder (p≤0.05) and decreased non-significantly in puifai and peakpoon added with Mulberry leaf tea powder (p>0.05). Carbohydrate increased significantly in bread and peakpoon added with mulberry leaf tea powder (p≤0.05) and increased non-significantly in puifai and snow lotus added with Mulberry leaf tea powder (p>0.05).

The objectives of this research were to characterize growth and melanin production on different culture media effect of copper ion and cobalt ion on growth and melanin production including antibacterial activity of crude melanin. The results revealed that actinomycetes strain PNST-01 have good growth on ISP-7 medium synthetic medium while strain PRBS-12 grow very well on ISP-3 medium complex medium. Both strains produced high amount of melanin showing brownish colony on ISP-7 medium but there is no melanin pigment production on ISP-1 medium and ISP-6 medium. Moreover the growth rate was reduced and both strains could not produce melanin pigment on ISP-7 medium without supplement with copper chloride and cobalt chloride. Crude melanin extract of strain PNST-01 showed antimicrobial activity against Bacillus cereus ATCC 11778 Bacillus subtilis ATCC 6633 and Staphylococcus aureus ATCC 25923 but could not inhibit Escherichia coli Shigella dysenteriae Salmonella typhi Klebsiella pneumoniae Serratia marcescens Pseudomonas aeruginosa and Streptococcus pyogenes . While crude melanin extract of strain PRBS-12 gave antimicrobial activity only on B. cereus ATCC 11778 and B. subtilis ATCC 6633. Based on the study the results can be used as key information for further development of melanin production and application in various industries.

This research aims to increasing efficiency in production and eliminate the problem of insufficient production capacity with respect to customer demand for electrical appliance factory by applying the line balancing method. Thus the study then developed two problem-solving approaches. The first approach is a method by which a firm applies the line balancing concept and ECRS technique (Eliminate Combine Rearrange and Simplify). On the contrary the second approach is required an investment in testing machine with value of 1000000 baht in order to support sufficient production capacity to meet customer demand. Also ECRS method is used to accomplish this process. Based on the results the first approach provided the production line efficiency improvement representing of 82.59% and reduced the labor cost of 277220 baht per year. However the loss of commercial opportunity has remained the same of 6336000 baht per year. Accordingly the second approach demonstrated of 92.11% of the production line efficiency improvement and the labor cost reduction valued of 277220 baht per year. As we expected the second approach satisfied production efficiency by eliminating the loss of commercial opportunity with value of 6336000 baht per year delivering a return of investment within two months.

The purpose of this study was to optimize the bioethanol production from cassava pulp and cassava wastewater. The study was divided into two phase: 1.) Pretreatment and enzymatic hydrolysis 2.) Bioethanol fermentation. The effect of substrate and ratio of loading 1 3 5 and 7% (w/v) with the mixed enzyme α-amylase and glucoamylase ratio of 1:1 (v/v).The results showed that at 7% substrate loading the highest reducing sugar concentration was 89.55±1.13 g/L. Regarding the best ratio of α-amylase and glucoamylase at 1:1 (v/v) with fermentation time of 4 h gave the highest yield of 0.58±0.02 (g product/g substrate). In addition the highest glucose yield of 0.36±0.04 (g product/g substrate) was observed in 2 h fermentation time after hydrolysis with α-amylase and glucoamylase using cellulase and xylanase ratio of 1:1 (v/v). The results indicated that usage of mixed enzyme proved to spend shorter hydrolysis time and enhance the fermentable sugar production from cassava waste. The enzymatic hydrolysate was used as substrate for bioethanol fermentation using S.cerevisiaeTISTR5339. The results showed that the ethanol yield at fermentation time at 6 h with S.cerevisiae5 10 20 and 30% (v/v) were 0.27±0.027 0.23±0.002 0.19±0.022 and 0.16±0.011 (g ethanol/g substrate) respectively. The result indicated that ethanol yield decreased with increasing cell concentration of S.cerevisiaeTISTR5339 from 5% (v/v) to 30% (v/v).

This project was to case study: the pet dog pattern of His Majesty King Rama the 9th to embroidery design on the product. The purpose of this project was to study the pattern technique from 10 needles of single head embroidery machine and could embroidered pattern on the product. The dog pattern was the main pattern design and embroidered on indigo dyed fabric in Sakon Nakhon province. Then the bag prototype from indigo dyed fabric added the value to the indigo-dyed cotton product of villagers in the community. After that the questionnaire was to a sample. It found that the dog pattern design as a model that needed the most in this society. The satisfaction evaluation of textile product design with the dog pattern design was embroidered from 10 needles of single head embroidery machine on cotton indigo dyed fabric in Sakon Nakhon province with the inspiration came from the pet dog of His Majesty King Rama the 9th in the good lovingly of the pet dog named Khun Thong Dang. The product would reflect the nature of life on the earth as much as possible. The pattern of behavior pattern brought a playful dog. It looked like the natural that was suitable used for the pattern. The pattern was appropriate position. The material and color used the most suitable natural indigo dyed cotton product. The indigo colors were from nature. They were not harmful to life on the earth. The bag usage had the most suitable shape at 47 percent. The embroidered dog pattern bag product was the most durable to use at 43 percent.