Abstract

The technology of adding Glucono Delta Lactone (GDL) to food made from soybeans is gaining popularity because it has many advantages. GDL is an acid that functions to coagulate proteins. GDL is a food additive that is Generally Recognized as Safe (GRAS). GDL has been applied in soy-based products such as tempeh and tofu. The use of GDL in tempeh products can reduce the acidification time of tempeh to 2-3 hours so that the production capacity of tempeh can increase significantly and reduce the amount of water used in the production process. The use of GDL in tofu is as a coagulant which makes the quality of tofu better than other agglomerates. The main objective of this paper is to provides an explanation of the application of GDL to soy-based foods. So, GDL can be used as an innovation to develop soybean-based food industries. It begins from describing about GDL, provides comparison between natural soy-based food and soy-based foods with GDL from study literature. Then moves to the application of GDL in tempeh, the application of GDL in tofu, and Back-Slopping technology.

Highlights

  • The technology of adding Glucono Delta Lactone (GDL) to food made from soybeans is gaining popularity because it has many advantages

  • GDL is an acid that functions to coagulate proteins and food additive that is Generally Recognized as Safe (GRAS) (Johnson et al, 2003; Ojukwu et al, 2020)

  • The use of GDL in tempeh products can reduce the acidification time of tempeh to only 2-3 hours so that the production capacity of tempeh can increase and reduce the amount of water used in the production process (Yang et al, 2021; Wijaya and Nurjanah, 2015)

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Summary

Study Literature

Glucono Delta Lactone (GDL) or known as lactone is a food additive derived from the hydroxycarboxylic acid group of cyclic ester types. GDL is commercially available and has been widely applied in the food industry[5]. GDL has been used as an acidifier that speeds up the tempeh fermentation process. GDL is used in other processed foods such as sausages, yogurt, and various dessert mixes. The facts on the ground show that tempe processing is still using the traditional method. This method takes a long processing time and the resulting product sometimes is not uniform. An innovation is needed to speed up the tempeh production process and produce uniform quality products, one of which is using GDL.

Comparison Between Tofu With GDL and Tofu With Other Coagulants
The Application of GDL in Tempeh
The Application of GDL in Tofu
Advantages and Disadvantages of the Use of GDL in Soy-Based Foods
Opportunities and Challenges of using GDL
Conclussion
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