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  3. Research Domains
  5. Biological Sciences
  7. Industrial Biotechnology
  9. Bioprocessing, Bioproduction And Bioproducts
  11. The Impact Of Thermal Pretreatment On Phytochemical Profiles And Bioactivity Of Freeze-dried Lily Bulbs (lilium Lancifolium)

The impact of thermal pretreatment on phytochemical profiles and bioactivity of freeze-dried lily bulbs (Lilium lancifolium)

Yixi Cai1, Hong Quan2,3, Ying Liu1

  • 1School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Vegetable Protein Processing Ministry of Education, South China University of Technology, Guangzhou 510640, China.

Food Chemistry: X
|March 28, 2024

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Extraction and Purification of Polyphenols from Freeze-dried Berry Powder for the Treatment of Vascular Smooth Muscle Cells In Vitro
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View abstract on PubMed

Summary
This summary is machine-generated.

Steaming and blanching pretreatments preserve freeze-dried lily bulb quality by maintaining color and enhancing antioxidant activity. These methods offer a sustainable strategy for industrial applications.

Area of Science:

  • Food Science
  • Horticultural Science
  • Plant Physiology

Background:

  • Lily bulb deterioration during storage necessitates effective processing techniques.
  • Maintaining quality attributes like color and bioactivity is crucial for processed lily bulbs.

Purpose of the Study:

  • To evaluate the impact of steaming, blanching, and microwave pretreatments on freeze-dried lily bulbs.
  • To assess changes in color, phenolic content, and bioactivity following different pretreatments.

Main Methods:

  • Freeze-drying of lily bulbs.
  • Application of steaming, blanching, and microwave pretreatments.
  • Analysis of color (L* value), total phenolic content, and antioxidant activity.

Main Results:

Keywords:
BioactivityFreeze-driedLily bulbsPretreatment

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  • Steaming and blanching pretreatments maintained lily bulb characteristics similar to untreated freeze-dried bulbs.
  • Polyphenol content, particularly regaloside A and B, was altered, influencing browning.
  • Blanching for 6 minutes yielded the highest antioxidant activity (4.39 ± 0.32 μmol TE/g DW).

Conclusions:

  • Steaming or blanching combined with freeze-drying is a viable strategy for improving lily bulb quality.
  • Pretreatment methods can mitigate deterioration and enhance the bioactivity of stored lily bulbs.
  • Optimized thermal pretreatments are key for industrial-scale lily bulb processing.