CASE STUDY
PROCESSING
High-protein pasta for the gluten intolerant
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A faculty member of Chulalongkorn University’s Faculty of Science in Thailand has researched and developed highprotein, gluten-free pasta noodles for people who are gluten intolerant. Although there are plenty of gluten-free pastas now available for consumers who are intolerant to gluten, many such products are made from rice flour, which causes the pasta to lose its desired chewiness and some also have lower protein content than wheat pasta. Many attempts have been made to heighten the quality of rice flour pasta by adding ingredients. To increase the protein, animal-based proteins like egg white and whey proteins or plant-based proteins like soybeans have been added. Different types of hydrocolloids have also been used to improve the texture and cooking quality, but such ingredients may need to be imported or are expensive. Associate Professor Dr Kanitha Tananuwong, a lecturer at the Department of Food Technology, the Faculty of Science, Chulalongkorn University, head of the research team, has now investigated the use of mung beans to improve the protein levels and texture of gluten-free pasta products. “Mung beans are an alternative ingredient which has the appropriate qualities. The best part is they can increase protein to pasta and help with the texture and cooking quality, not to mention that they’re easy to find here in Thailand,” said Kanitha. The research team came up with recipes for developing gluten-free pasta using the scientific and statistical methods.
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March/April 2023
With three main ingredients — rice flour, mung bean flour and concentrated mung bean protein, they developed four basic pasta recipes with 17–24% of protein, which is higher than wheat pasta, which contains only 14% of protein. “After mixing the pasta dough, we ran it through a pasta extruder to make spaghetti using the extrusion process under high temperatures, pressure and mechanical shear. Then, the cut pasta is dehydrated until the moisture is no more than 12%,” Kanitha said. The finished pasta must be inspected for significant characteristics, such as an evaluation of cooking quality and of cooked pasta texture under a texture analyser. More importantly, consumers’ acceptance was tested through a tasting of cooked pasta. Kanitha said for the appearance, taste and texture when mixed with a sauce and overall preference, the gluten-free pasta with 20% protein, which is the best recipe developed, received similar scores to wheat pasta, but with higher protein content. The research project was funded by Thai Wah (Public Company Limited) and the ingredients used in developing the pasta are domestically grown in Thailand. “A benefit of collaborating with the private sector is our research has a chance to hit the shelves in the market,” Kanitha said. The research team is now working on refining the production of concentrated plant-based proteins for possible used in alternative protein drinks.
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