Method for far-infrared drying of food under reduced...

A - Human Necessities – 23 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A23L 3/54 (2006.01) A23L 3/005 (2006.01) A23L 3/3418 (2006.01) A23L 3/40 (2006.01) A23L 3/42 (2006.01) F26B 5/04 (2006.01) F26B 7/00 (2006.01) F26B 21/14 (2006.01) F26B 25/06 (2006.01)

Patent

CA 2234268

Disclosed is a method of sterilizing and dewatering food in a shortened length of time, still permitting the processed food to remain an elongated length of time in good taste. The inner pressure of the insulated dryer is raised by feeding nitrogen gas after evacuating the insulating dryer, and at the same time, pieces of food are exposed to the spray of ethanol, so that the oxygen gas remaining in the tissue of food may be replaced by nitrogen gas to prevent oxidization of food, and at the same time, ethanol penetrates the food well for sterilization. Next, the inner pressure of the insulating dryer is reduced by removing nitrogen gas therefrom, and the pieces of food are exposed to the far-infrared radiation to be heated, thus preventing evaporation of water from the pieces of food to prevent their temperature from being lowered, and expediting removal of water in the surrounding low-pressure atmosphere to provide semi-dried products. The sterilization-and-water removal has the effect of extending the preservation period of dried food. Also advantageously, the dewatering of food at a low temperature has the effect of substantially preventing the discoloring and deteriorating of the dried food, permitting the long-lasting of good taste.

L'invention concerne un procédé pour stériliser et déshydrater unaliment en un temps très court, ce qui permet de conserver son goût pendant une longue durée. De l'éthanol est pulvérisé sur l'aliment dans le sécheur sous une pression assurée par une alimentation en azote et la pression est ensuite diminuée. Dans ces conditions, l'oxygène contenu dans la texture de l'aliment est remplacé par l'azote, ce qui empêche l'oxydation de l'aliment. En même temps, l'éthanol pénètre dans l'aliment, qui est ainsi stérilisé. Ensuite, l'azote est évacué du sécheur et l'aliment est chauffé avec des infrarouges lointains sous une pression réduite. Ainsi, toute diminution de la température de l'aliment due à l'évaporation de l'humidité est évitée et la température de l'aliment est conservée, même au centre de cet aliment. Ceci favorise l'évaporation de l'humidité sous pression diminuée et cette humidité de l'aliment peut être éliminée en un temps court pour fournir un aliment semi-sec. La combinaison de la stérilisation et de la déshumidification contribue à augmenter la durée de conservation de l'aliment. Comme la température de l'aliment est maintenue basse durant l'opération de déshydratation, les qualités organoleptiques de l'aliment restent excellentes et sa couleur n'est pas modifiée.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for far-infrared drying of food under reduced... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for far-infrared drying of food under reduced..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for far-infrared drying of food under reduced... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1664111

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.