Proximate Composition, Mineral Content And Sensory Assessment Of An Iru Analogue Produced From Fermented Lima Bean (Phaseolus lunatus)
Keywords:
Iru, fermentation, lima bean, locust beanAbstract
Search for an alternative raw material for iru production informed the fermentation of lima bean to an iru analogue comparable to iru from locust bean. The proximate composition, mineral contents and sensory analyses were carried out on fermenting lima bean and locust bean for 72 h. Results showed that protein content increased from 16.81 to 17. 52% and 21.81 to 24.21% o to 72 h in the fermenting lima bean and locust bean respectively. The fat content in both samples also increased with fermentation time. Lima beans fermented for 72 h had significantly lower (p< 0.05) carbohydrate compared to the raw lima bean. Processing (roasting, dehulling, cooking) drastically reduced the mineral content (Na, Ca, Mg .P, K, Fe, Zn and Cu) in lima bean but increased with fermentation time. There was no significant difference (p > 0.05) in the colour and texture of the whole lima bean iru, laboratory prepared locust bean iru and the commercial iru. All the three iru samples were accepted with no significant difference at 5% level of significance when added to okro soup as a condiment. In conclusion, the study has shown that an iru analogue with comparable proximate composition, mineral content and sensory quality as conventional iru from locust bean could be produced from lima bean.
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