Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (10): 2456-2464.DOI: 10.3969/j.issn.1004-1524.20221792

• Food Science • Previous Articles     Next Articles

Effect of drying methods on quality of yellow peach powder

LIU Guige1,2,3(), QIAO Yongjin3, CHEN Bingjie3, WANG Xiao3, ZHANG Yi3, ZHONG Yaoguang1,2,*()   

  1. 1. College of Food Sciences & Technology, Shanghai Ocean University, Shanghai 201306, China
    2. Experimental Teaching Demonstration Center for Food Science and Engineering, Shanghai Ocean University, Shanghai 201306, China
    3. Agri-Food Storage and Processing Research Center, Shanghai Academy of Agricultural Sciences, Shanghai 201400, China
  • Received:2022-12-14 Online:2023-10-25 Published:2023-10-31

Abstract:

In order to select the suitable drying method to produce yellow peach powder, yellow peach was used as raw material, hot air drying (HAD), spray drying (SD) and vacuum freeze drying (VFD) were introduced. Sensory evaluation of yellow peach powder was conducted, and physical properties such as color, solubility, fluidity, bulk density, water holding capacity, and oil holding capacity were determined. In addition, the contents of nutrients such as protein, total soluble solids, titratable acids, vitamin C, total phenols were explored, as well as the microstructure, and the types and contents of aroma components. The results showed that the yellow peach powder produced by HAD had dark color, high viscosity and poor tissue state. Compared with the yellow peach powder produced by SD, the water content [(2.69±0.02)%], dissolution time [(46.67±0.21) s], bulk density [(0.21±0.11) g·mL-1] and angle of repose [(26.07±0.25)°] of yellow peach powder produce by VFD were significantly (P<0.05) decreased, yet its water solubility index [(98.21±0.16)%], water holding capacity [(2.51±0.19) g·g-1] and oil holding capacity [(3.41±0.21) mL·g-1] were significantly increased, and the contents of total phenols [(82.27±0.21) mg·kg-1], vitamin C [(79.3±1.1) mg·kg-1] and total soluble solids [(6.98±0.13)%] were significantly improved, and the ratio of sugar to acid was better. Besides, the yellow peach powder produced by VFD retained more volatile compounds, such as alcohols, aldehydes and esters, which exhibited better fruit flavor and aroma. For microstructure, the yellow peach powder produced by SD showed spherical, irregular shrinkage, while the yellow peach powder produced by VFD showed skeleton and porous structure, which was easy to recover to the original structure. In conclusion, the yellow peach powder produced by VFD had better quality. Thus, VFD is suitable to produce high-quality yellow peach powder.

Key words: yellow peach, hot air drying, spray drying, vacuum freeze drying, quality

CLC Number: