Optimization of sprouting and infrared radiation combination treatment for production of ready-to-eat sprouted soybean

READY-TO-EAT SPROUTED SOYBEAN PROCESS OPTIMIZATION

Authors

  • Priyanka Sakare ICAR-National Institute of Secondary Agriculture, Ranchi - 834 010, Jharkhand, India
  • Saroj Kumar Giri ICAR-Central Institute of Agricultural Engineering, Bhopal - 462 038, M.P., India
  • Adinath Kate ICAR-Central Institute of Agricultural Engineering, Bhopal - 462 038, M.P., India

DOI:

https://doi.org/10.56042/jsir.v82i07.1758

Keywords:

Antinutrients, Infrared heating, Soybean, Sprouting, Trypsin inhibitor activity

Abstract

Antinutritional factors (ANFs) in the soybean limit its consumption in raw form. Although sprouting reduces ANFs to a certain extent, they are still beyond the safe limit of human consumption, limiting soybean consumption in sprouted form. The inactivation of soybean ANFs necessitates adequate heat treatment. Therefore, in the present study, post-sprouting infrared (IR) treatment was given to reduce ANFs, particularly trypsin inhibitors. The effects of IR power density (4250 – 4750 W/m2), exposure time (4 – 8 min), and stage of germination (5 – 11 mm length of sprouts) on color, firmness, and Trypsin Inhibitor Activity (TIA) were investigated. The response surface methodology was used to optimize the responses. The optimum conditions were 4497.5 W/m2 IR power, 4 min exposure time, and 5.54 mm germination stage (average sprout length). The color difference, firmness, and TIA values obtained at optimal conditions were 2.43, 24.66 N, and 2.458 mg/g, respectively. Sprouting and IR combination treatment efficiently lowered the TIA to a safe level (~77% reduction from raw soybean) while retaining the quality of the sprouted grains. The study suggests that combination treatment can be effectively used to produce ready-to-eat soybean sprouts.

 

 

 

 

 

 

Author Biographies

Priyanka Sakare, ICAR-National Institute of Secondary Agriculture, Ranchi - 834 010, Jharkhand, India

Agricultural Structures and Process Engineering Division, ICAR-National Institute of Secondary Agriculture, Ranchi - 834 010, Jharkhand, India

 

 

 

Saroj Kumar Giri, ICAR-Central Institute of Agricultural Engineering, Bhopal - 462 038, M.P., India

Agro Produce Processing Division, ICAR-Central Institute of Agricultural Engineering, Bhopal - 462 038, M.P., India

 

 

 

Adinath Kate, ICAR-Central Institute of Agricultural Engineering, Bhopal - 462 038, M.P., India

Agro Produce Processing Division, ICAR-Central Institute of Agricultural Engineering, Bhopal - 462 038, M.P., India

 

 

 

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Published

2023-07-07