Download e-book for kindle: A Complete course in canning and related processes by Anthony Lopez

By Anthony Lopez

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None of the plastics and laminates are as good a gas barrier as glass and metal. Light can also cause deterioration in some products. The ideal packaging choice depends on the requirements of product type, processing conditions, required shelf life, and target market. 9 Developments in cannery equipment Seaming: The equipment used in canneries also had to develop significantly. Originally cans were manually soldered closed, and good artisans could do about six an hour. Once the double seam was invented, closing of cans became much faster.

They can also be found in milk, cheese, and eggs if the animals are fed contaminated feed. •  Patulin is a mycotoxin that is produced by certain species of Penicillium, Aspergillus and Byssochylamys moulds. The moulds that produce patulin grow on a variety of foods, including fruit (for example, apples, grapes, and pears), vegetables, grains (for example, flour and malt), and cheese. Commercially, patulin is mainly a problem in apple juice. Patulin is relatively stable in acid solutions but will undergo hydrolysis in alkali and is destroyed by fermentation (it is therefore not found in either alcoholic fruit beverages or vinegar produced by fruit juices).

They are biologically active chemical compounds that give the mould a competitive advantage over other mould or bacteria species in its environment. They are almost all cytotoxic, disrupting various cellular structures like membranes and interfering with vital cellular processes like RNA and DNA synthesis. The consumption of mycotoxin-contaminated food is related to several acute and chronic diseases in humans and animals. Examples of common mycotoxins are discussed below. •  Aflatoxins are a group of toxins produced by Aspergillus spp.

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