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Related Concept Videos

Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the atmosphere, the...
Taste Buds and Receptors01:20

Taste Buds and Receptors

Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
Parentral Nutrition: Centeral and Peripheral Parental Nutrition01:27

Parentral Nutrition: Centeral and Peripheral Parental Nutrition

Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
PN can be administered through two primary routes:
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Pasteurization and Food Preservation01:28

Pasteurization and Food Preservation

Pasteurization is a widely employed thermal processing technique designed to enhance the safety and shelf life of perishable food and beverages. By subjecting products to specific high temperatures for controlled durations, this method effectively inactivates pathogenic microorganisms and spoilage enzymes without significantly compromising sensory qualities. The technique has been pivotal in food safety management, especially for consumables susceptible to microbial contamination such as milk,...
Principles of Food Preservation01:27

Principles of Food Preservation

Food spoilage results from microbial growth, enzymatic activity, and environmental factors that gradually degrade the sensory, nutritional, and safety qualities of food. Preservation techniques aim to slow or halt these processes to extend shelf life and maintain product quality.A key concept in food microbiology is the microbial growth curve, which includes four phases: lag, exponential (log), stationary, and death. During the lag phase, bacteria adjust to their environment without significant...
Upstream Processing01:27

Upstream Processing

Upstream processing represents a critical phase in biomanufacturing, wherein biological systems such as microorganisms, mammalian cells, or insect cells are cultivated to produce therapeutic proteins, vaccines, enzymes, or other biologically derived products. This phase encompasses all steps from the selection and genetic manipulation of the production organism to the cultivation of cells in bioreactors under tightly controlled environmental conditions.Host Selection and Genetic OptimizationThe...

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Related Experiment Video

Updated: Jul 19, 2026

PTR-ToF-MS Coupled with an Automated Sampling System and Tailored Data Analysis for Food Studies: Bioprocess Monitoring, Screening and Nose-space Analysis
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Symposium on 'nutritional effects of new processing technologies'. New processing technologies: an overview.

G W Gould1

  • 1grahame@ggould.fsnet.co.uk

The Proceedings of the Nutrition Society
|June 19, 2002
PubMed
Summary

New food preservation methods aim to inactivate microorganisms without extensive heating. Technologies like high hydrostatic pressure offer alternatives to traditional heat treatments, preserving food quality and reducing additives.

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Area of Science:

  • Food Science and Technology
  • Microbiology
  • Food Engineering

Background:

  • Traditional food preservation primarily inhibits microbial growth, with heat being the most common inactivation method.
  • Consumer demand for minimally processed foods with better sensory and nutritional profiles drives the search for alternatives to heat.
  • Existing methods often lead to organoleptic and nutritional damage, and increased reliance on additives.

Purpose of the Study:

  • To explore novel, non-thermal food preservation technologies for microbial inactivation.
  • To identify alternative methods that reduce reliance on heat and additives.
  • To assess the potential of emerging technologies in food processing.

Main Methods:

  • Application of high hydrostatic pressure (HPP) for non-thermal pasteurization.
  • Utilizing high-voltage electric discharges for microbial inactivation.
  • Employing high-intensity laser and non-coherent light pulses.
  • Investigating manothermosonication (mild heat, ultrasonication, pressure).
  • Exploring high-magnetic-field pulses.
  • Incorporating natural antimicrobials like lysozyme.

Main Results:

  • High hydrostatic pressure is commercially implemented for non-thermal pasteurization of various foods.
  • Other physical methods (electric discharges, light pulses, manothermosonication, magnetic fields) are in developmental or evaluation stages.
  • Natural antimicrobials are increasingly utilized in food preservation.

Conclusions:

  • Emerging non-thermal technologies offer promising alternatives to heat for microbial inactivation in foods.
  • These methods aim to improve food quality, nutritional value, and reduce additive use.
  • Further research is needed, particularly regarding the nutritional consequences of these novel preservation techniques.