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Physicochemical properties of spray-dried rice flour with Lactobacillus plantarum CGKW3

분무건조공정을 이용한 유산균포집 미분의 제조 및 물리화학적 특성

  • Park, Hye-Mi (Department of Food Science and Technology, Catholic University of Daegu) ;
  • Lee, Dae-Hoon (Department of Food Science and Technology, Catholic University of Daegu) ;
  • Jeong, Yoo-Seok (Biohealth Convergence Center, Daegu Technopark) ;
  • Jung, Hee-Kyoung (Biohealth Convergence Center, Daegu Technopark) ;
  • Cho, Jae-Gon (Young Poong Co.) ;
  • Hong, Joo-Heon (Department of Food Science and Technology, Catholic University of Daegu)
  • 박혜미 (대구가톨릭대학교 식품공학전공) ;
  • 이대훈 (대구가톨릭대학교 식품공학전공) ;
  • 정유석 ((재)대구테크노파크 바이오헬스융합센터) ;
  • 정희경 ((재)대구테크노파크 바이오헬스융합센터) ;
  • 조재곤 (농업회사법인 (주)영풍) ;
  • 홍주헌 (대구가톨릭대학교 식품공학전공)
  • Received : 2015.03.24
  • Accepted : 2015.05.23
  • Published : 2015.06.30

Abstract

The physicochemical properties of spray-dried rice flour with Lactobacillus plantarum CGKW3 were investigated. Amylose and damaged starch contents of spray-dried rice flour (S10, S20, S30, and S50) with L. plantarum CGKW3 were 14.18~17.75% and 24.65~34.08%, respectively. The particle size of spray-dried rice flour was $82.28{\sim}131.17{\mu}m$. The rice flour with L. plantarum CGKW3 showed a good powder flowability. The water absorption and water solubility of spray-dried rice flour were 1.96~2.13 and 9.91~21.95%, respectively. Thermal properties measured by differential scanning calorimeter revealed that the enthalpy (${\Delta}H$) for starch gelatinization were highest in the rice flour (S50) with L. plantarum CGKW3. When compared, the viable cell number of spray-dried rice flour were found to be in the following order: S10 (5.78 log CFU/g) < S20 (6.38 log CFU/g) < S30 (6.69 log CFU/g) < S50 (7.11 log CFU/g). The survaival rate of L. plantarum CGKW3 was 60.02-73.85%, which reflected the improvement in the quality of rice flour with an increase in treatment concentration. Based on our results, spray-dried rice flour with L. plantarum CGKW3 could be used in various types of rice foods.

Acknowledgement

Supported by : 산업통상자원부

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