Study On The Production Process Of Tartary Buckwheat Xiaoqu Liquor And Design Of The Factory Process

The tartary buckwheat is a cereal material which can be used for both food and drug production.It can also be used for rice wine and beer brewing.The brewing technology of multi-grain Xiaoqu liquor using tartary buckwheat as main material remains for further investigation.In order to improve the utilization value of tartary buckwheat and develop new products using tartary buckwheat as main material,Xiaoqu liquor was brewed using the tartary buckwheat as main material and rice,sorghum and wheat as auxiliary materials by the traditional brewing processes.The research contents included strain screening,Rhizopus koji preparation,production technology investigation and factory processes design.The results are shown below..(1)A strain of Rhizopus(M4)with high glucoamylase avtivity and a strain of yeast(J2)with high eater production were separated from culture tank.The preparation conditions of Rhizopus koji were investigated and the results were as followed:water ratio of substrate 55%,inoculation amount 2%,culturing tempreture 36?,and the glucoamylase avtivity of Rhizopus koji was 350 U/g after 3 days of culturing.The amount of yeast cells could reach 4.24×109 cfu/g after culturing under temperature of 28 ? for 35 h.Rhizopus koji was mixed with ester yeast by a ratio of 47:3 and 6%of ethanol yeast was added to the mixture as know as Xiaoqu.The glucoamylase avtivity of the Xiaoqu could reach 287.5 U/g.(2)Xiaoqu liquor was brewed using the tartary buckwheat as main material and rice,sorghum as auxiliary materials by the traditional brewing processes.Processing conditions were studied and confirmed as followed:grain soaking time 13 h,initial steaming time 50 min,slow steaming time 8 min,secondary steaming time 70 min,inoculation amount of Xiaoqu 0.5%,strains culturing time 24 h,culturing temperature 37 ?,fermemtation tempreture 28?,fermemtation time 7 d.(3)10 batches of production test were processed under optimal conditions.The water ratio of distilled grains,acidity,reducing sugar amount and starch amount were detected for each test,and the utilization coefficient of starch was 64.21%.The yield of Xiaoqu liquor could reach 44.23-44.63%.The total acid(shown as acetic acid)and the total ester(shown as ethyl acetate)of Xiaoqu liquor could reach 0.45-0.60 g/L and 1.00-1.3 g/L respectively.The solid content of liquor was 0.25-0.31 g/L.(4)The production technology design of a factory with an annual output of 3000 tons of tartary buckwheat Xiaoqu liquor was completed,including water usage,power consumption and coal dosage,designs of workshops and chemical laboratory.Finally,the blueprint of production workshop was drawn.