PETITS FOURS

Invertase is an enzyme that catalyzes the hydrolysis (breakdown) of sucrose (table sugar) into fructose and glucose. Alternative names for invertase include EC 3.2.1.26, saccharase, glucosucrase, beta-h-fructosidase, beta-fructosidase, invertin, sucrase, maxinvert L 1000, fructosylinvertase, alkaline invertase, acid invertase, and the systematic name: beta-fructofuranosidase. The resulting mixture of fructose and glucose is called inverted sugar syrup. Related to invertases are sucrases. Invertases and sucrases hydrolyze sucrose to give the same mixture of glucose and fructose. Invertases cleave the O-C(fructose) bond, whereas the sucrases cleave the O-C(glucose) bond.For industrial use, invertase is usually derived from yeast. It is also synthesized by bees, which use it to make honey from nectar. Optimal temperature at which the rate of reaction is at its greatest is 60 °C and an optimum pH of 4.5. Typically, sugar is inverted with sulfuric acid.

Cochineal extract or carmine (E120) is a natural red colorant derived from the dried bodies of the female cochineal insect.

It is widely used to impart a pink, red, or purple hue to various food and beverage products, including yogurts, ice creams, confectionery, and fruit juices.

Although it is a natural additive, E120 is known to cause severe allergic reactions, including anaphylaxis, in some individuals. It is also not suitable for vegetarians or vegans due to its insect origin.

Lecithins are natural compounds commonly used in the food industry as emulsifiers and stabilizers.

Extracted from sources like soybeans and eggs, lecithins consist of phospholipids that enhance the mixing of oil and water, ensuring smooth textures in various products like chocolates, dressings, and baked goods.

They do not present any known health risks.

Lecithins are natural compounds commonly used in the food industry as emulsifiers and stabilizers.

Extracted from sources like soybeans and eggs, lecithins consist of phospholipids that enhance the mixing of oil and water, ensuring smooth textures in various products like chocolates, dressings, and baked goods.

They do not present any known health risks.

Citric acid is a natural organic acid found in citrus fruits such as lemons, oranges, and limes.

It is widely used in the food industry as a flavor enhancer, acidulant, and preservative due to its tart and refreshing taste.

Citric acid is safe for consumption when used in moderation and is considered a generally recognized as safe (GRAS) food additive by regulatory agencies worldwide.

Sorbitol (), less commonly known as glucitol (), is a sugar alcohol with a sweet taste which the human body metabolizes slowly. It can be obtained by reduction of glucose, which changes the aldehyde group to a hydroxyl group. Most sorbitol is made from corn syrup, but it is also found in nature, for example in apples, pears, peaches, and prunes. It is converted to fructose by sorbitol-6-phosphate 2-dehydrogenase. Sorbitol is an isomer of mannitol, another sugar alcohol; the two differ only in the orientation of the hydroxyl group on carbon 2. While similar, the two sugar alcohols have very different sources in nature, melting points, and uses.

Pectins (E440) are natural carbohydrates, predominantly found in fruits, that act as gelling agents in the food industry, creating the desirable jelly-like texture in jams, jellies, and marmalades.

Pectins stabilize and thicken various food products, such as desserts, confectioneries, and beverages, ensuring a uniform consistency and quality.

Recognized as safe by various health authorities, pectins have been widely used without notable adverse effects when consumed in typical dietary amounts.

Sodium carbonates (E500) are compounds commonly used in food preparation as leavening agents, helping baked goods rise by releasing carbon dioxide when they interact with acids.

Often found in baking soda, they regulate the pH of food, preventing it from becoming too acidic or too alkaline. In the culinary world, sodium carbonates can also enhance the texture and structure of foods, such as noodles, by modifying the gluten network.

Generally recognized as safe, sodium carbonates are non-toxic when consumed in typical amounts found in food.

AMMONIUM BICARBONATE is an inorganic compound with formula (NH4)HCO3, simplified to NH5CO3. Ammonium bicarbonate is used in the food industry as a raising agent for flat baked goods, such as cookies and crackers, and in China in steamed buns and Chinese almond cookies. It was commonly used in the home before modern day baking powder was made available.

Shellac is a resin secreted by the female lac bug, on trees in the forests of India and Thailand. It is processed and sold as dry flakes (pictured) and dissolved in alcohol to make liquid shellac, which is used as a brush-on colorant, food glaze and wood finish. Shellac functions as a tough natural primer, sanding sealant, tannin-blocker, odour-blocker, stain, and high-gloss varnish. Shellac was once used in electrical applications as it possesses good insulation qualities and it seals out moisture. Phonograph and 78 rpm gramophone records were made of it until they were replaced by vinyl long-playing records from the 1950s onwards. From the time it replaced oil and wax finishes in the 19th century, shellac was one of the dominant wood finishes in the western world until it was largely replaced by nitrocellulose lacquer in the 1920s and 1930s.