The objective of this study is to survey consumer behavior’s want in using mushroom replace of fat in the vietnamese sausage. The result of this survey is the choosing Phutan oyster mushroom to use replace of fat. Studying the basic method in producing the vietnamese sausage by studying the amount of fat at 40 60 and 80 grams The result of this the vietnamese sausage that has 80 grams fat because emulsion in the fat makes the vietnamese sausage soft and delicious. And study about the amount of mushroom at 80100 and 120 grams replace of fat The result of this the vietnamese sausage that has the mushroom 100 grams because the vietnamese sausage is the softest and springiness has the weakest smell of mushroom. This compare the original vietnamese sausage with the study on fat replacement by mushroom in vietnamese sausage found that the mushroom vietnamese sausage has the fat lower than the vietnamese sausage 12.78 fold and the most fiber 5.33 fold. Studying self life of the mushroom vietnamese sausage at 5-8.C found that Aw color and the moisture content increase and test about microbe TPC in this product is less than 10 cfu/g and lower than the benchmark (it must be lower that 1x103 for 1 gram). Acceptant the most consumers moderately.

Bamboo sawdust from chopstick production process was used as substrate for Indian oyster (Phoenix mushroom) cultivation. Experimental studies in cultivation material including wood sawdust bamboo sawdust and fermented chopped straw for 4 experiments - first experiment used 100 % of wood sawdust the second experiment used 25 % of bamboo sawdust mixed with 75 % of fermented chopped straw the third one used 50 % of bamboo sawdust mixed with 50 % of fermented chopped straw the forth one used 75 % of bamboo sawdust mixed with 25 % of fermented chopped straw and the last one used 100 % of bamboo sawdust. All experiments were analyzed for chemical properties nutrients in substrates for mushroom growing and yield of mushroom. The results showed that each type of mushroom substrate with different humidity. pH is suitable for use as a mushroom cultivation material. For quantity of nutrients in bamboo sawdust is more than wood sawdust. Increasing of nutrients is depending on increase fermented chopped straw. For mycelia growth in wood sawdust were faster than a bamboo sawdust culture. Yield of Indian oyster (Phoenix mushroom) found in any treatments. Especially in experiment 3 (50 % of bamboo sawdust mixed with 50 % of fermented chopped straw) is more suitable for Indian oyster (Phoenix mushroom) cultivation which compared to the other treatments because of highest yield mushrooms (175.11 grams per piece).