Retention of bioactive compounds during extrusion processing and storage

Jasmeet Kour; Sukhcharn Singh; Dharmesh Chandra Saxena

doi:10.1016/j.fochx.2021.100191

Retention of bioactive compounds during extrusion processing and storage

Food Chem X. 2021 Dec 20:13:100191. doi: 10.1016/j.fochx.2021.100191. eCollection 2022 Mar 30.

Authors

Jasmeet Kour¹, Sukhcharn Singh¹, Dharmesh Chandra Saxena¹

Affiliation

¹ Department of Food Engineering and Technology, Sant Longowal Institute of Engineering and Technology, Longowal District, Sangrur, Punjab 148106, India.

Abstract

Retention of bioactive compounds (beta-glucans, lignans and gamma oryzanol) was analyzed after extrusion and during storage period of three months under four relative humidities using saturated salt solutions such as potassium carbonate (43.26%), magnesium nitrate (52.60%), potassium chloride (84.36%) and potassium nitrate (93.58%). The control sample comprising a corn and rice flour blend (50 g each) was substituted with beta-glucans at 3 g/100 g and 6 g/100 g, flaxseed lignans at 6.67 g/kg and 11.67 g/kg and gamma oryzanol at 1.5 g/100 g and 3.0 g/100 g at low and high levels, respectively. After extrusion, beta-glucan was retained up to 82.67 and 90.83%, lignans were retained at 86.31 and 66.66% whereas retention of gamma oryzanol was 71.33 and 51.67% at low and high level of substitution, respectively. Retention of bioactive compounds was the lowest along with a decrease in L* and b* values and an increase in a* value was observed under higher relative humidity (84.36% and 93.58%) storage conditions.

Keywords: 24-methylene cycloartanyl ferulate: (PubChem CID10793902); Bioactive compounds; Campesteryl ferulate: (PubChem CID15056832); Colorimetric values; Ethanol: (PubChem CID702); Extrusion; Glutamic acid: (PubChem CID611); Magnesium nitrate: (PubChem CID25212 ); Moisture; Potassium carbonate: (PubChem CID11430); Potassium chloride: (PubChem CID4873); Potassium nitrate: (PubChem CID24434); Retention; Secoisolariciresinol diglucoside: (PubChem CID90657612); Storage; Texture; cycloartenyl feulate: (PubChem CID59271038); β-sitosteryl ferulate: (PubChem CID9938436).