The aim of this research was to develop Pad Thai crispy bar which is made from rice noodle (Chanthaburis noodle) tofu dried shrimp garlic chives and peanut that have been cooked and dried.Mixed with Pad Thai sauce then forming into a bar and dried. The study started with produced Pad Thai crispy bar made from three formula of Pad Thai sauce (A B and C). Sensory evaluation by using 9- point hedonic scale showed that the highest liking score of appearance ( 7. 36) taste ( 7. 56) and overall liking (7.68) were obtained from formula A. Mixture design was used to optimize the formula of the Pad Thai crispy bar. The effect of three variables: tofu (70-90%) dried shrimp (10-15%) and garlic chives ( 13- 25% ) on the physical chemical and sensory qualities of the product were investigated. The results showed that increasing the tofu decreased the lightness (L*) and hardness values of the product. Increasing the dried shrimp decreased the overall liking score. Optimum formula of tofu dried shrimp and garlic chives was 72% 13% and 15% respectively. At this formula had the highest score of all sensory attributes were in the range of 6. 86-7. 24 ( like slightly – like moderately) . The developed Pad Thai crispy bar had the value of aw and hardness value 0. 24 and 7.00 N respectively. In addition the developed product consisted of 9.17% moisture (wet weight basis) total carbohydrate fat ash and crude fiber which were 50.04% 30.80% 15.82% 3.34% and 1.98% (dry weight basis) respectively. The energy value determined by Bomb calorimeter which were 582.10 Kcal per serving (10 pieces) and the cost of Pad Thai crispy bar was 21.60 bath per serving (80 g).

This research aims to study the base formulation of Pad Thai noodle to study on type and quantity of modified starch in Instant Pad-Thai noodle. To study on the amount of Pad Thai sauce to supplement in Pad Thai noodle. To study on the quality of Instant Pad Thai noodle with Pad Thai source to design the optimal packaging for Instant Pad Thai noodle and to study of consumers acceptance of Instant Pad-Thai noodle with Pad Thai source. The results of this study showed that the optimal formula of Pad Thai noodle was 80 grams of rice starch 100 grams of tapioca and 300 grams of water. The color values of L * (brightness) a * (red) and b * (Yellow) was 64.13 ± 0.01 -0.92 ± 0.02 and 14.52 ± 0.02 respectively. This Pad-Thai noodle has a slightly yellowish white color with a moisture content of 5.31 ± 0.03 %. The optimum amount of modified starch used in the semi-finished fried Thai noodle formula by replacing the tapioca starch in the basic formula was modified starch 30 per 70 grams of tapioca starch. The modified formula of Pad Thai noodle has a slightly yellowish white color with L * (brightness) a * (red) and b * (yellow) equal to 62.82 ± 0.01 -1.10 ± 0.01 13.45 ± 0.01 respectively with a moisture content of 5.66 ± 0.11 %. The amount of Thai stir-fried sauce used in the semi-finished fried Thai noodle recipe by replacing the amount of water in the recipe was 80 grams of rice flour 70 grams of tapioca flour 30 grams of modified flour and 100 grams of Thai stir-fried sauce and 200 grams of water. The color of modified Pad-Thai noodle was L * (brightness) a * (red) and b * (yellow) equal to 43.67 ± 0.01 8.25 ± 0.02 and 22.42 ± 0.10 respectively with moisture content of 2.58 ± 1.36 %. The number of microorganisms was less than 10 CFU/g. The amount of yeast and mold was less than 10 CFU/g and E. coli content was less than 3 MPN /g. Semi-finished Thai stir-fried noodles with sauce were slightly brownish. The noodle was soft and sticky and had the smell of Pad Thai sauce. There was a taste of Thai stir-fried sauce added in the Pad Thai noodle was tear more difficult than the other commercial noodle.

This paper aimed to study the process of making instant Pad Thai powder by Spray Drying method. The appropriate temperature of hot gas and the quantity of Maltodextrin in processing instant Pad Thai powder by Spray Drying method were studied. Factorial in Completely Randomized Design (CRD) was used. The study found that the appropriate quantity of Maltodextrin was 20% and the appropriate temperature for in and out hot gas was 150/90 ºC. The color variation of the finishing instant Pad Thai powder was as follow: Bright colors L* 88.32 Red a* 0.99 Yellow b* 8.26. The color variation after cooking the product was: Bright colors L* 30.73 Red a* 3.08 Yellow b* 8.25. aw 0.22. The moisture of the powder was 1.24. Then the consumer satisfaction was studied by using 3 types of Pad Thai Noodles; Pad Thai Noodles with Instant pad Thai Powder Pad Thai Noodles with regular Pad Thai sauce and Pad Thai Noodles sold in general market. Randomized Complete Block Design RCBD was used. The study of the consumer satisfaction revealed that there was no difference between pad Thai Noodles made with Instant Pad Thai Powder and Pad Thai Noodles made with regular Pad Thai sauce at the statistical significance (p>0.05). The testers rated the overall taste of Pad Thai Noodles at 7.57. Next the researcher studied the expiration period of Instant Pad Thai Powder by packing the product in double vacuum foil and storage the product at 4 different temperatures 30 35 45 and 55 degree Celsius. Then the product was studied to evaluate the physical chemical microorganism and sensory property. The product kept at 55 ºC was the most different of the four storage products at p ≥ 0.05 with the highest level of consumer satisfaction at color = 7.33 smell = 7.30 taste = 7.90 texture = 7.57 and total = 7.40. The amount of microorganism yeast and fungus were at the safe level to comsume.