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Author Spotlight: Process Development for the Spray-Drying of Probiotic Bacteria and Evaluation of the Product Quality
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Optimization of bayberry juice spray drying process using response surface methodology.

Yongji Liu1, Fengxia Chen2, Honghui Guo1

  • 11Department of Nutrition, Henry Fok School of Food Science and Engineering, Shaoguan University, Daxue Road, Shaoguan, 512005 Guangdong Province China.

Food Science and Biotechnology
|September 29, 2018
PubMed
Summary

Spray drying bayberry juice powder with optimal conditions (150°C inlet air, 31% maltodextrin) enhances quality. This process improves yield, anthocyanin retention, and antioxidant capacity while reducing moisture and hygroscopicity.

Keywords:
AnthocyaninAntioxidantBayberryGlass transition temperatureSpray drying

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Area of Science:

  • Food Science and Technology
  • Chemical Engineering
  • Nutritional Science

Background:

  • Bayberry juice powder is a valuable product, but its quality is affected by processing parameters.
  • Optimizing spray drying is crucial for preserving bioactive compounds and physical properties.
  • Understanding the impact of inlet air temperature and maltodextrin concentration is key.

Purpose of the Study:

  • To optimize spray drying conditions for bayberry juice powder using response surface methodology.
  • To evaluate the effects of inlet air temperature and maltodextrin concentration on key quality attributes.
  • To determine the ideal parameters for maximizing beneficial properties and minimizing undesirable ones.

Main Methods:

  • Central composite design-response surface methodology was employed for optimization.
  • Thirteen experimental runs varied inlet air temperature (145.8-174.1°C) and maltodextrin concentration (22.9-37.0%).
  • Key responses measured included yield, moisture, hygroscopicity, glass transition temperature (Tg), color, phenolics, anthocyanins, and antioxidant capacity.

Main Results:

  • Optimal conditions were identified at 150°C inlet air temperature and 31% maltodextrin concentration.
  • These conditions yielded powder with 74.16% yield, 3.15% moisture, and 10.25% hygroscopicity.
  • Significant improvements were observed in anthocyanin (89.55%) and phenolics (77.71%) retention, and antioxidant capacity (30.19 mmol TE/g).

Conclusions:

  • Spray drying parameters significantly influence bayberry juice powder quality.
  • The optimized conditions effectively preserve bioactive compounds and enhance functional properties.
  • This study provides a framework for producing high-quality bayberry juice powder through controlled spray drying.