Sugar‐snap cookies were protein enriched with sunflower protein isolate (SFPI) at levels of up to 20% (flour weight basis). Spread and surface grain were reduced, and color was slightly affected, with increasing levels of SFPI. The addition of soy lecithin (1–2%) improved spread and surface grain characteristics. Sensory evaluation scores for cookies showed acceptable cookie quality at levels of up to 15% SFPI.
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Claughton et al. (1989) studied this question.
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