Adapting High Hydrostatic Pressure by Tatiana Koutchma

By Tatiana Koutchma

Adapting excessive Hydrostatic strain (HPP) for nutrition Processing Operations provides advertisement advantages of HPP expertise for particular processing operations within the nutrition undefined, together with uncooked and ready-to-eat (RTE) meat processing, dairy and seafood items, beverages and drinks, and different rising approaches.

The booklet offers excessive hydrostatic strain processing (HPP) for therapy of alternative teams of uncooked and comprehensive items, concentrating on particular pressure-induced results that might bring about diverse organic affects, and the knowledge important for specifying HPP technique and kit. It additionally discusses phenomena of compression heating, the HPP in-container precept, requisites for plastic fabrics, elements affecting efficacy of HPP remedies, and on hand advertisement structures. also, the publication offers up to date info at the regulatory prestige of HPP know-how worldwide.

This booklet is a perfect concise source for foodstuff strategy engineers, foodstuff technologists, product builders, federal and country regulators, apparatus brands, graduate scholars, and educators excited about study and development.

  • Includes case reviews for HPP remedy of commercially produced meals with information about diverse HPP processing equipment
  • Gives examples of particular purposes for meat and fowl items remedies, clean juices and drinks, and seafood
  • Covers power mark downs, environmental features of HPP expertise, and regulatory status

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Example text

1 HPP Principle High HPP or high pressure processing utilizes elevated pressures typically in the range of 100–1000 MPa with or without addition of external heat. 1. 000 In typical batch HPP operation, prepacked food is loaded inside a pressure vessel and is then pressurized by utilizing water as a pressure-transmitting medium. With direct compression used in lab scale systems, the volume of the vessel is reduced by the action of a hydraulic pressure applied to a piston. In indirect compression systems, an intensifier, or high-pressure pump, is used to pump a pressure-transmitting fluid directly into the vessel to achieve a target pressure.

Canada). HPP inactivates Salmonella, E. coli, and L. monocytogenes in fruit and vegetable liquid and semiliquid products. The color of fruit and vegetable products such as jams, fruit juices, and purees is generally preserved if thresholds of temperature and/or pH are observed. Excellent retention of fresh-like flavors for far greater time periods than those obtained with conventional thermal treatment has also been observed under optimal storage conditions. HPP offers safety and shelf-life extension advantages for juices and other beverages—without adding heat or preservatives.

The compression of the product produces a consistent and thermodynamically predictable temperature increase. Using the minimum initial temperature, the final temperature is estimated for the final process. For example, for a final process temperature of 110°C at 670 MPa, an initial temperature of 78°C results in a 22°C increase from compression heating. Preheating, precooling, and temperature equilibration of products are important steps in HPP to achieve the required process temperature. A uniform initial target temperature Ti of the food sample is desirable in order to achieve a uniform temperature increase in a homogeneous food system during compression.

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