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Related Concept Videos

Cryo-electron Microscopy01:28

Cryo-electron Microscopy

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Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological molecules and results in several artifacts. Also, the high-energy electron beam damages the sample and makes it difficult to obtain high-resolution images. These issues can be addressed using cryo-EM, which uses frozen samples and gentler electron beams. The technique was developed by Jacques Dubochet, Joachim Frank, and Richard Henderson, for...
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Related Experiment Video

Updated: May 21, 2025

Preparation of Cell Extracts by Cryogrinding in an Automated Freezer Mill
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Preparation of Cell Extracts by Cryogrinding in an Automated Freezer Mill

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Cryoconcentration: an integrated agro food processing technique for concentration.

C Manusha1, B S Roopa1

  • 1Food Engineering Department, CSIR - Central Food Technological Research Institute, Mysuru, Karnataka 570 020 India.

Journal of Food Science and Technology
|May 19, 2025
PubMed
Summary
This summary is machine-generated.

Freeze concentration (FC) offers a superior method for concentrating liquid foods, preserving quality by avoiding heat and vapor interfaces. This gentle technique maintains flavor, nutrients, and aroma, unlike traditional evaporation methods.

Keywords:
Block freeze concentrationCryo-concentrationLiquid foodsProgressive freeze concentrationSuspension freeze concentration

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Area of Science:

  • Food Science and Technology
  • Chemical Engineering
  • Process Engineering

Background:

  • Conventional concentration methods like evaporation can degrade food quality due to heat exposure.
  • Membrane-based concentration methods may face issues with fouling and limited applicability for certain food matrices.
  • Freeze concentration (FC) emerges as a promising alternative for preserving sensitive food components.

Purpose of the Study:

  • To review and summarize various types and methods of cryo-concentration or freeze concentration.
  • To highlight the advantages of FC in preserving the quality of liquid foods.
  • To discuss the application of FC in the food and beverage industry.

Main Methods:

  • The review synthesizes information on different freeze concentration techniques.
  • Principles of ice crystal formation and separation are discussed.
  • Applications in concentrating liquid foods are explored.

Main Results:

  • Freeze concentration effectively reduces water content while preserving flavor, nutrients, and aroma.
  • Low-temperature processing maintains the integrity of thermolabile compounds.
  • FC yields high-quality concentrated products with preserved organoleptic and nutritional values.

Conclusions:

  • Freeze concentration is a highly effective and gentle method for concentrating liquid foods.
  • It is a superior alternative to evaporation and membrane filtration for maintaining product quality.
  • FC supports the preservation of valuable compounds in food and beverages.