The objective of this research was to study the optimal supersaturated temperature of palm sap powder by heating at 3 different temperatures (120 125 and 130 ºC). The initial sap contained moisture content pH and total soluble solid by 86.63% 6.84 and 15.5 ºBrix respectively. The result showed that the optimal supersaturated temperature of palm sap powder was found to be at 120 ºC. This powder had the yellow-light brown that contained L* a* and b* color value of 68.85 5.39 and 23.74 respectively. While the total soluble solid and Aw of this powder contained 84.84 ºBrix and 0.6 respectively. The sensorial evaluation was accepted in range of like moderately level (p≤0.05). The total microorganisms were 3.6x102 CFU/g and the yeast and molds were 10 CFU/g in which microbiological quality of this product was in standard of dried foods. This study pointed out that supersaturated technique can be utilized in palm sap powder production.

Fresh coconut syrup is a product from coconut spadix which has unique sweet taste and odor. Due to its short storage life it is usually processed into palm sugar. Development of new product from fresh coconut syrup would add more value by using it to produce crispy jelly. A suitable formula selected as a basic formula used 42.11 percent of refined sugar 56.14 percent of water and 1.75 percent of jelly powder. The basic formula was adjusted by calculating amount of water and soluble solids. Then a study was conducted to determine suitable amount of refined sugar heating period and drying temperature. It was found that a higher ratio of refined sugar and heating period led to increased concentration level of the mixture. As a result the crispy jelly had higher amount of sugar chips on the jellys surface and higher level of hardness. The highest score given by testers was for crispy jelly which used a ratio of fresh coconut syrup and refined sugar at 1:0.6 and 1:0.8 heating period of 5 minutes. Drying crispy jelly at higher temperature resulted in decreased drying period and higher degree of hardness. Drying at 70 degree Celcius produced crispy jelly with good quality which received the highest likeness score from testers. A study that kept crispy jelly in plastic box for at least 8 weeks showed that the tested condition could effectively maintain good quality of the crispy jelly.