Chemical, Physicochemical, Nutritional, Microbiological, Sensory and Rehydration Characteristics of Instant Whole Beans (Phaseolus vulgaris)

José Armando Ulloa1,2,3*, Silvia Jazmin Ibarra-Zavala2, Silvia Patricia Ramírez-Salas2Petra Rosas-Ulloa1,2,
José Carmen 
Ramírez-Ramírez4 and Blanca Estela Ulloa-Rangel2

1Center of Food Technology, Autonomous University of Nayarit, Ciudad de la Cultura Amado Nervo, Tepic, CP 63155
  Nayarit, Mexico

2Academic Unit of Chemical Biology and Pharmaceutical Sciences, Autonomous University of Nayarit, Ciudad de la
 Cultura Amado 
Nervo, Tepic, CP 63155 Nayarit, Mexico
3Academic Unit of Agriculture, Autonomous University of Nayarit, Carretera Tepic-Puerto Vallarta, Xalisco, CP 63780
  Nayarit, Mexico

4Academic Unit of Veterinary and Animal Science, Autonomous University of Nayarit, Carretera a Chapalilla, Compostela,
  CP 63700 Nayarit, Mexico

Article history
Received April 1, 2014
Accepted January 9, 2015

Key words:
instant whole beans, protein quality, sensory quality, rehydration

Instant whole beans obtained by drying at 25 °C were evaluated for their chemical, physicochemical, nutritional, microbiological, sensory and rehydration characteristics. The proximal composition of instant whole beans was typical of this kind of food, whereas aand L*, a* and b* values were 0.639, 98.55, –0.28 and –1.52, respectively. In instant whole beans, 75 % of the essential amino acids had a value greater or equal to the reference standard for adult humans; the protein quality in terms of chemical score was 95 %. Microbiological counts of aerobic mesophilic bacteria, moulds, yeasts and total coliforms of rehydrated instant whole beans were <10 CFU/g, whereas the scores for colour, flavour, texture and overall acceptability were 7.22, 7.68, 7.24 and 7.34, respectively, on a 1–9 hedonic scale. The logarithmic and Pilosof models showed close fits (R2>0.99) to the experimental data for drying of cooked beans and rehydration of instant whole beans, respectively. In the light of the chemical, physicochemical, nutritional, microbiological, sensory and rehydration characteristics of instant whole beans found in this study, drying at 25 °C is recommended for the production of such food.


*Corresponding author:   
   +52 311 211 8851


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