Lemongrass does contain carbohydrates, but it does not contain any significant amounts of sugar. The carbohydrates found in lemongrass are primarily in the form of dietary fiber, which is a non-digestible carbohydrate. I hope this helps!
According to the literature, lemongrass does contain a small amount of carbohydrates, including glucose (as the primary monosaccharide), fructose, and uronic acid. However, it is important to note (as Maria Cohen already mentioned before) that the carbohydrate content in lemongrass is relatively low compared to other plant-based foods.
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Article Food Ingredients Derived from Lemongrass Byproduct Hydrodist...