Hydration properties and texture fingerprints of easy‐ and hard‐to‐cook bean varieties
Peter K. Kinyanjui, Daniel Njoroge, Anselimo Makokha, Stefanie Christiaens, Daniel S. Ndaka, Marc Hendrickx
Food Science & Nutrition
Abstract
The objective of this study was to understand the factors that affect the hydration and cooking profiles of different bean varieties. During this study, nine bean varieties were classified as either easy-to-cook (ETC) or hard-to-cook (HTC) based on a subjective finger pressing test and an objective cutting test. Rose coco, Red haricot, and Zebra beans were classified as ETC, while Canadian wonder, Soya fupi, Pinto, non-nodulating, Mwezi moja, Gwaku, and New mwezi moja were HTC. The effect of different soaking (pre)-treatments on the cooking behavior and/or water absorption of whole or dehulled beans was investigated. Dehulling, soaking in high pH and monovalent salt solutions reduced the cooking time of beans, while soaking in low pH and CaCl2 solutions increased the cooking time. Moisture uptake was faster in ETC and dehulled beans. Soaking at high temperatures also increased the hydration rate. The results point to pectin-related aspects and the rate of water uptake as possible factors that influence the cooking rate of beans.
Extracted Claims
4 claims extracted from this paper into the knowledge graph
soaking increases cooking time
“soaking in low pH and CaCl2 solutions increased the cooking time”
soaking increases hydration rate
“Soaking at high temperatures also increased the hydration rate”
soaking reduces cooking time
“Dehulling, soaking in high pH and monovalent salt solutions reduced the cooking time of beans”