摘要:
The invention provides a method and an apparatus for bringing fish to and under-cooled state. The invention provides an improved method where fish is brought to an under-cooled state by a sub-chilling process before processing, which prolongs rigor and allows processing of the fish in rigor providing better quality fish products.
摘要:
Provided is a means for easily producing a plurality of types of flake ice each having a different freezing point and approximately uniform solute concentration. There is provides a flake ice production device 10. A drum 11 includes an inner cylinder 22, an outer cylinder 23 surrounding the inner cylinder 22, and a clearance 24 formed between the inner cylinder 22 and the outer cylinder 23. A refrigerant supply unit 29 supplies a refrigerant to the clearance 24. A rotary shaft 12 rotates taking a central axis of the drum 11 as an axis. An injection unit 13 rotates together with the rotary shaft 12 and sprays brine toward the inner peripheral surface of the inner cylinder 22. A scraping unit 14 scrapes off flake ice that is generated as a result of brine having been sprayed from the injection unit 13 becoming attached to the inner peripheral surface of the inner cylinder 22, which has been cooled by the refrigerant supplied to the clearance 24.
摘要:
Provided is a means for more efficiently generating ice which has a high cooling capacity. A flake ice production device 10 generates ice by cooling the wall surface of an inner cylinder 22 and freezing brine that has adhered to the wall surface of the cooled inner cylinder 22. A spraying unit 13 supplies brine to the wall surface of the inner cylinder 22 by causing the brine to adhere thereto. A stripping unit 14 collects the ice generated on the wall surface of the inner cylinder 22. In addition, the flake ice production device 10 is designed such that formula (1) is satisfied when Y represents an ice making speed indicating the amount of ice generated on the wall surface of the inner cylinder 22 per unit time, and x1 represents the thermal conductance rate of the wall surface of the inner cylinder 22. Y=f x1 .
摘要:
Provided are: ice which has excellent cooling capacity; a production method therefor; a method for producing a cooled article; and a refrigerant. Also provided are: ice in a non-separating state; and a production method therefor. The present invention pertains to ice which satisfies conditions (a) and (b) and is from a liquid that includes an aqueous solution comprising a solute. (a) The temperature of the ice after melting completely is less than 0°C. (b) The rate of change of the solute concentration in the aqueous solution generated from the ice in the melting process is 30% or lower. The refrigerant of the present invention includes said ice. The refrigerant also includes water which comprises the same solute as the solute included in the ice, wherein the ratio of the concentration of the solute in the ice and the concentration of the solute in the water is preferably 75:25 to 20:80.
摘要:
A method of preparing fresh produce comprises a processing step in which unprepared fresh produce is prepared for consumption 34, 35; a surface treatment is applied 41; a rapid cooling process performed 42; and the treated fresh produce is packaged 51. The processing step includes at least one of peeling 34, slicing 35 and chunking and is performed before at least one of the steps of applying a surface treatment 41 and performing the rapid cooling process 42. From the initial processing step on the unprepared fresh produce to the packaging step, the fresh produce remains in a temperature controlled environment in which the temperature is below 5oC. Also disclosed, is a processing line configured to process fresh produce by the method previously described. The advantage is an increase in shelf life of the fresh produce with no changes in quality characteristics such as texture, colour or flavour.
摘要:
In order to overcome problems that earlier apparatus and methods have experienced, an apparatus (10) for applying a heat transfer substance, in particular comprising a cryogen, for example comprising liquid nitrogen (LIN), to destroy bacteria, in particular comprising campylobacter, on a product (12), in particular selected from the group consisting of a food product, a carcass, or a combination of food products and carcasses, is proposed, said apparatus (10) comprising: - a housing (16) having an inlet (18), an outlet (22), and a chamber (20) therebetween in communication with the inlet (18) and the outlet (22); - a conveyor (24) constructed and arranged to transport the product (12) through the chamber (20); - a heat sensing apparatus (26, 28, 30; 32, 34, 36) responsive to heat parameters of the product (12) at the inlet (18) and the outlet (22) and able to transmit signals of said heat parameters; - a heat transfer substance spray apparatus (38, 40, 44) in fluid communication with the chamber (20) for providing said heat transfer substance to said chamber (20); and - a controller (52) connected to the heat sensing apparatus (26, 28, 30; 32, 34, 36) and the heat transfer substance spray apparatus (38, 40, 44) for controlling administration of said heat transfer substance to the chamber (20) and the product (12) in response to the signals from said heat sensing apparatus (26, 28, 30; 32, 34, 36). A related method of applying a heat transfer substance is also proposed.
摘要:
The invention relates to process for reducing the number of viable microorganisms present on the surface of meat, especially poultry. The process comprising the steps of rapidly cooling the surface membrane of a contaminated meat item to a sequence of temperatures sufficient to reduce the number of viable bacteria, whilst at the same time retaining in the muscle meat the organoleptic and nutritional qualities of fresh meat. Campylobacter spp . are successfully controlled by the methods disclosed.