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Consumer perception on food quality is a key performance indicator for success in food industri development. Many factors influence consumer perception on food quality. The purpose of this study was to identify the attributes of food product and evaluate it’s performance to find out attributes based on consumer perception. This study uses marketing mix 4P namely Product (product), Price (prices), Place (where / location), Promotion (promotion). The respondent in this research was the consumer that bought and consumed soybean milk in Jember. The sampling technique used accidental sampling with a number of sample is 75 people, based on linier time function. The analysis of data used Importance–Performance Analysis. The result of this research showed that taste of product, flavour of product, and expired date of the product, and the price of product were the key atributes of soybean milk quality.

Indonesia is one of the countries producing subtropical plants and fruits. The application of postharvest handling technology which is less reliable will change the quality of fruits. Some equipments is therefore required to know ripeness condition of fruits. This research aims at detecting the freshness of climacteric fruits such as banana with the use of brazilien extracts as a colorimetric indicator. Measurements were conducted to determine the influence of pH variations on the change in color of brazilien extract, the stability of the color of the film, respiration rate and vitamin C of banana. The results of this study indicate that the color stability of the film indicator containing sappan wood extract stored in the exicator for 6 days shows a color change from yellow to orange. Furthermore, from the observation result of banana deterioration for 6 days, it is obtained vitamin C content of 92.65 + 2.1 mg / 100 g, an increase in pH 5.1, an increase in texture profile is 10.1 mm / 10s, an increase in respiration rate is CO2 levels. It also indicates that banana deterioration is followed by color change of indicator film from yellow to dark red.

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