Blanching

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blanching

[′blan·chiŋ]
(food engineering)
A hot-water or steam direct-scalding treatment of raw foodstuffs of particulate type to inactivate enzymes which otherwise might cause quality deterioration, particularly of flavor, during processing or storage.

Blanching

 

(1) In the food-processing industry, blanching is the processing of fruits and vegetables in hot water. This prevents them from darkening and makes the vegetable cells permeable to sugar molecules, which facilitates jam-making. Blanching is also used in the production of raisins and the withering of grapes in the production of sweet and ordinary wines. Blanching for one to three minutes shortens the withering process two to three times.

(2) In the tanning industry blanching is used to remove the residues of subcutaneous cellulose tissues from the lower (flesh side) of skins. After blanching, the surface of the flesh side becomes very smooth, and after dressing and glazing, it becomes lustrous. Skins are also blanched to achieve uniform thickness and to remove defects that cannot be removed by polishing after the application of coatings on the outer side of the skin.

References in periodicals archive ?
"I've been giving a lot of thought the last several years, to how the reinsurance brokers [and system] operate, observing the directions that it's taking," Blanch said.
Control samples processed in the impingement oven were blanched at 100[degrees]C for 20 min and samples processing in the IR RWO were blanched using two different time/temperature combinations, either 343.3[degrees]C for 1 min or 287.7[degrees]C for 1.5 min (Table 1).
In March last year when the base rate was 0.5%, Prof Blanch flower called for it to be cut to zero.
Edwards particularly attacked inferences Blanch drew from text messages between Issa and Jad.
Combilift design engineers added a number of features to Alvan Blanch's Combi-SC to ensure stable lifting of various sized units, the largest of which weighs around 22t, is almost 20m long and nearly 4m wide.
I also allot freezer space for odd-shaped packages, such as those for cabbage leaves that have been blanched and frozen flat for making cabbage rolls in winter.
That was as close as the Wrexham-based outfit got as first Dureau stepped up to nail a drop-goal to increase the Catalan lead to seven points and then Blanch added his second try of the night and 10th of the season to seal the win.
Archbishop Blanch pupils will be performing The Women Left Behind, poems read in character by a nurse, a mother, a sister and a munitions worker to highlight the difficult roles placed upon women during WWI.
Selected by a panel of industry experts and recognised for his commitment to quality and excellent customer service, Blanch was one of only two operators outside of the United States given such a distinction.
Staff said Mr Blanch was a retired wheelwright who had moved to Norfolk from London in the 1950s.
Blanch scored five tries in the tournament including a hat-trick against Tonga and a brilliant double against Fiji.
Winger Damien Blanch scored three tries for Ireland andndash; all when the Tongan team had a player in the sin bin andndash; to keep the prospect of an upset alive until the end.