Study On Influencing Factors Of Peanut Oil Quality And Establishment Of Quality Management System

In recent years,the problem of safety of peanut oil has attracted much attention,especially acid price,peroxide value and ATFB₁ exceeding standard.This paper focuses on the production process of peanut oil,analyzes and studies the factors affecting the quality of peanut oil,then summarizes the influencing factors,and constructs a quality management system to ensure the safety of peanut oil.The results of the study are as follows:1.Effects of different peanut varieties on peanut oil quality.Five varieties of low seedling red clothing,Yueyou 79,Zhan you 75,Huazhou red clothing and market peanut were determined.Peanut oil was extracted by pressure-pressing under the same conditions,and the difference analysis and sensory evaluation of oil yield and physicochemical index were carried out.It was found that the oil yield,acid value and peroxide value of different peanut varieties differed greatly.2.Effects of different pretreatment methods on peanut oil quality.The effects and differences of microwave roasting and baking on the oil yield and physicochemical index of peanut kernel were studied and sensory evaluation was carried out.The results showed that the acid value of peanut oil treated by microwave was the lowest,the acid value of peanut oil treated by microwave was the lowest between 0.10mmoL/kg⁰.30 mmoL/kg and the peroxide value of roasted peanut oil was the lowest,and the oil yield was between 5.76%and 27.43%.The peanut oil after microwave treatment has the highest oil yield.Through the identification of the transparency of peanut oil,it is found that the peanut oil treated by microwave has slight turbidity,and the peanut oil obtained by other treatment methods is clear and transparent.3.Study on microwave pretreatment of peanut oil.The effects of microwave pretreatment conditions on peanut kernel oil yield,acid value and peroxide value of peanut oil were discussed.On the basis of single factor experiment,the oil yield,POV value and acid value of peanut oil were taken as indexes.The optimum condition of microwave pretreatment was obtained by orthogonal optimization experiment.The results showed that the optimum conditions of microwave pretreatment were as follows:material thickness was17.5 mm,microwave power density was 0.5 W/g,microwave treatment time was 4 min.4.Effects of different extraction methods on the quality of peanut oil.The effects of extraction and press on peanut kernel oil yield,acid value and peroxide value of peanut oil were studied,and sensory evaluation was carried out.It was found that the POV value of the oil extraction method was higher than that of the extraction method,and the peanut oil obtained by the press method was clear and transparent,while the peanut oil obtained by the extraction method was slightly turbid.5.Effects of different extraction methods on the quality of peanut oil.The effects of extraction and press on peanut kernel oil yield,acid value and peroxide value of peanut oil were studied,and sensory evaluation was carried out.It was found that the extraction method had a significant effect on the oil yield and POV value.The oil yield,acid value,POV value and sensory evaluation were considered synthetically,and peanut oil was extracted by pressing method.Taking Gaozhou,Guangdong province as an example,it is found that the key factors affecting peanut oil quality are raw materials,production,processing and storage of finished products.Peanut oil production and processing enterprises and small workshops need to close the raw materials,production,processing and storage of finished products,in order to effectively guarantee the quality and safety of peanut oil from the source.Finally,through the construction of peanut oil hazard analysis and critical control point?HACCP?system,the whole process of peanut oil production and processing was analyzed,and the five key control points were found out:raw material purchase,raw material storage,raw material screening.Bake/steam frying and storage and transportation,and make HACCP schedule and control measures for peanut oil production and processing enterprises and small workshops for reference,better grasp the quality of peanut oil,to ensure the safety of edible oil of the people.