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Effect of chemical pretreatment on dehulling parameters of flaxseed (cv. Garima)

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Abstract

In the present study, effects of chemical (ethanol, HCl and sulphuric acid) pretreatment on various dehulling parameters of flaxseed (cv. Garima) including yield, hull, hullability, extraction rate and embryo (dehulled flaxseed) recovery were studied. Pretreated flaxseed, at 3.1 to 3.6 % moisture range (p > 0.05) were dehulled for 60 s in a laboratory model rice polisher/dehulling machine at 2,000 rpm followed by aspiration (hull separation) using a laboratory model aspirator. The study revealed that chemical pre-dehulling treatment of flaxseed plays a significant role in the embryo recovery of flaxseed. Both ethanol and HCl pre-dehulling treatment enhanced but sulphuric acid pretreatment reduced the embryo recovery of flaxseed. Moreover, HCL and Sulphuric acid deteriorated the quality of hull obtained during dehulling, hence may not be considered for flaxseed dehulling. The study showed the maximum embryo recovery from ethanol pretreated flaxseed, hence ethanol pre-dehulling treatment with 2 h tempering time may be considered for effective flaxseed dehulling.

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Acknowledgement

Financial assistance received from Department of Science and Technology (DST), Govt. of India, New Delhi, India for this study is duly acknowledged.

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Authors and Affiliations

  1. Central Institute of Post Harvest Engineering & Technology, Ludhiana, 141 004, Punjab, India

    D. Mridula, P. Barnwal & Sushma Gurumayum

  2. ADG (PE), ICAR, New Delhi and Ex-Head, FG&OP Division, CIPHET, Ludhiana, India

    K. K. Singh

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  1. D. Mridula
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  2. P. Barnwal
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  3. Sushma Gurumayum
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  4. K. K. Singh
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Correspondence to D. Mridula.

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Mridula, D., Barnwal, P., Gurumayum, S. et al. Effect of chemical pretreatment on dehulling parameters of flaxseed (cv. Garima). J Food Sci Technol 51, 2228–2233 (2014). https://doi.org/10.1007/s13197-012-0699-7

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  • DOI: https://doi.org/10.1007/s13197-012-0699-7

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