Comparative structural and techno-functional properties of barnyard, browntop and little millet starch by dielectric gas discharge and vacuum plasma

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2025年5月30日

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Yashi Srivastava,
Nisha Chandwani,
Purvi Kikani Dave,
Chirayu Patil

摘要

The millet starch treated with dielectric barrier discharge atmospheric plasma and vacuum plasma spectra showed absorption bands at wave number 3436 cm⁻¹ (–O–H–; Vibrational mode starch), 2931 cm⁻¹ & 1650 cm⁻¹ (–C–H–; glucose unit deformation) and 1167 cm⁻¹, 1079 cm⁻¹, 994 cm⁻¹. The compound class alcohol with –O–H– bond stretching is observed in the millet flour at the absorbance range of 3436 cm⁻¹. In comparison to DBD, the vacuum plasma treated millet samples showed more absorption values at wavenumber 3436 cm⁻¹ (–O–H– bond stretching), 1167 cm⁻¹, 1079 cm⁻¹ and 994 cm⁻¹ (–C–O–H–; Stretching vibration). It showed more hydrophilicity of vacuum-treated samples at 10–15 min than DBD. The contact angle formed by DBD showed lesser values than vacuum treated samples. The crystallinity of DBD-treated samples showed a decreasing trend with the course of exposure time.