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Effects of steam blanching pretreatment on quality of spray-dried powders prepared from pressed juice of garlic chives

부추의 증숙처리가 착즙액 분무건조 분말의 품질에 미치는 영향

  • Chung, Hun-Sik (Department of Food Science and Technology, Pusan National University) ;
  • Kim, Han-Soo (Department of Food Science and Technology, Pusan National University) ;
  • Kim, Dong-Seob (Department of Food Science and Technology, Pusan National University) ;
  • Lee, Young-Guen (Department of Food Science and Technology, Pusan National University) ;
  • Seong, Jong-Hwan (Department of Food Science and Technology, Pusan National University)
  • Received : 2015.03.24
  • Accepted : 2015.04.16
  • Published : 2015.06.30

Abstract

This study was conducted to develop a spray-dried garlic chives (Allium tuberosum) powder and to evaluate its quality characteristics depending on the treatment of steam blanching pretreatment $100^{\circ}C$, 3 min) and the addition of forming agents (dextrin (DE=10), ${\beta}$-cyclodextrin) during process. The steam blanching pretreatment showed an increase in $L^*$ value while a decrease in $-a^*$, $b^*$, $C^*$, and $h^o$ values of the powder. Moisture content and water soluble index were not affected by the treatment of steam blanching and the addition of forming agents, whereas the particle diameter was the smallest in the steam blanching treatment and dextrin addition. Chlorophyll, phenolic compound, and vitamin C content, and DPPH radical scavenging activity of non-pretreated powder were significantly higher than those of the steam blanching treated powders. However, there was no significant difference between the two forming agents. The sensory acceptability (color, smell, and overall acceptability) of powder treated with steam blanching were significantly higher than those of non-pretreated powders. Therefore, the steam blanching pretreatment of fresh garlic chives affected on the better quality characteristics of the spray-dried powders when compared with non-pretreated powder though it adversely affected the natural chemical quality of fresh garlic chives.

Acknowledgement

Supported by : 울산광역시 농업기술센터

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