A Novel Field Test Strip Which Enables Spot Test For The Detection And Identification Of Added Sugar In The Fruit Juice And Other Food Products

Abstract: The growing demand for rapid and easy measurement of monitoring food products has necessitated the use of sensors which have speed, sensitivity and stability over the conventional measurement technologies. Adulteration of juice products creates an economic burden on producers who honestly, and with quality in mind, endeavor to produce the best product possible. Besides the competitive profit edge afforded adulterators, honest producers who purchase juice concentrates need a way of discerning adulterated juice from natural products so as not to be legally responsible for the purchase of adulterated material. However, as previously noted, the high purity of beet sugar and the inability to discriminate sucrose from beets from sucrose from other plant sources, such as apples and oranges, has rendered this a formidable task. Generally sugar is mixed in the juice to increase the brix content of juice i.e. to increase the refractive index reading of juice, which was already adulterated with sugar. Beet sugar is a relatively pure, multi-use food composed almost totally of sucrose. Its sweetness and relative cost make it a useful additive to a number of commercially available food stuffs to enhance flavor and desirability. Beet and corn sugar is chemically similar to sucrose from apples and oranges, beet sugar has also been used as an adulterant of various food products, especially juices. The present invention relates to the detection of any added sugar apart from natural sugar content in juice and other food products by our test strips. The invented test strip is coated and saturated with sugar specific lectins and proteins. More particularly, the present invention relates to a biochemical and chemical assay directed to the detection of added sugar in food products and a kit to affect such an immunoassay. The chemical method includes the Coating of 5 ml of hydrochloric acid along with 0.1 g of resorcinol. Then drop of juice on the strip give red colour indicates the presence of added sugar in milk.

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