Fate of proteic and lipidic compounds during production of a traditional legume condiment (Soumbala) made from African Locust Bean (Parkia biglobosa) seeds
2020
Esse, Yavo Michel Olivier | Guehi, Tagro Simplice | Grabulos, Joël | Morel, Gilles | Malomar, Robert Thierry | Tardan, Eric | Mestres, Christian | Achir, Nawel
Soumbala is made from African locust bean seeds (Parkia biglobosa ), a legume widely spread in west Africa. It is a lipid and protein‐rich condiment obtained by three main steps: cooking, fermentation and drying. Ten different analysis were made on AFLBS samples at each step with a particular focus on protein and lipid fates. Results showed that cooking decreased markedly the carbohydrate content leaving mainly proteins and lipids as substrates for fermentation. During this step, 20% of the proteins were converted into free amino acids, mainly glutamic acid and tyrosine. Significant biogenic amines release occurred and reached 50 mg per 100 g of dried ALBS. Di‐glycerides and fatty acids increased markedly and represented 11% and 7% of the total lipids of dried ALBS. These results give a complete view of the nutritional characteristics of dried ALBS, its benefit but also its defects that arise during fermentation and not suppressed by the subsequent processing steps.
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