Agar, or agar-agar, is a jelly-like substance consisting of polysaccharides obtained from the cell walls of some species of red algae, primarily from "ogonori" (Gracilaria) and "tengusa" (Gelidiaceae). As found in nature, agar is a mixture of two components, the linear polysaccharide agarose and a heterogeneous mixture of smaller molecules called agaropectin. It forms the supporting structure in the cell walls of certain species of algae and is released on boiling. These algae are known as agarophytes, belonging to the Rhodophyta phylum. The processing of food-grade agar removes the agaropectin, and the commercial product is essentially pure agarose.
Food preservation includes processes that make food more resistant to microorganism growth and slow the oxidation of fats. This slows down the decomposition and rancidification process. Food preservation may also include processes that inhibit visual deterioration, such as the enzymatic browning reaction in apples after they are cut during food preparation. By preserving food, food waste can be reduced, which is an important way to decrease production costs and increase the efficiency of food systems, improve food security and nutrition and contribute towards environmental sustainability. For instance, it can reduce the environmental impact of food production.
Gelatin desserts are desserts made with a sweetened and flavoured processed collagen product (gelatin), which makes the dessert "set" from a liquid to a soft elastic solid gel. This kind of dessert was first recorded as jelly by Hannah Glasse in her 18th-century book The Art of Cookery, appearing in a layer of trifle. Jelly recipes are included in the 19th-century cookbooks of English food writers Eliza Acton and Mrs Beeton.
Orange juice is a liquid extract of the orange tree fruit, produced by squeezing or reaming oranges. It comes in several different varieties, including blood orange, navel oranges, valencia orange, clementine, and tangerine. As well as variations in oranges used, some varieties include differing amounts of juice vesicles, known as "pulp" in American English, and "(juicy) bits" in British English. These vesicles contain the juice of the orange and can be left in or removed during the manufacturing process. How juicy these vesicles are depend upon many factors, such as species, variety, and season. In American English, the beverage name is often abbreviated as "OJ".
Candy, alternatively called sweets or lollies, is a confection that features sugar as a principal ingredient. The category, also called sugar confectionery, encompasses any sweet confection, including chocolate, chewing gum, and sugar candy. Vegetables, fruit, or nuts which have been glazed and coated with sugar are said to be candied.
Marmalade is a fruit preserve made from the juice and peel of citrus fruits boiled with sugar and water. The well-known version is made from bitter orange. It is also made from lemons, limes, grapefruits, mandarins, sweet oranges, bergamots, and other citrus fruits, or a combination. Citrus is the most typical choice of fruit for marmalade, though historically the term has often been used for non-citrus preserves.
Pectin is a heteropolysaccharide, a structural acid contained in the primary lamella, in the middle lamella, and in the cell walls of terrestrial plants. The principal chemical component of pectin is galacturonic acid which was isolated and described by Henri Braconnot in 1825. Commercially produced pectin is a white-to-light-brown powder, produced from citrus fruits for use as an edible gelling agent, especially in jams and jellies, dessert fillings, medications, and sweets; and as a food stabiliser in fruit juices and milk drinks, and as a source of dietary fiber.
Carrageenans or carrageenins are a family of natural linear sulfated polysaccharides that are extracted from red edible seaweeds. Carrageenans are widely used in the food industry, for their gelling, thickening, and stabilizing properties. Their main application is in dairy and meat products, due to their strong binding to food proteins. In recent years, carrageenans have emerged as a promising candidate in tissue engineering and regenerative medicine applications as they resemble native glycosaminoglycans (GAGs). They have been mainly used for tissue engineering, wound coverage, and drug delivery.
Gummy bears are small, fruit gum candies, similar to a jelly baby in some English-speaking countries. The candy is roughly 2 cm (0.8 in) long and shaped in the form of a bear. The gummy bear is one of many gummies, popular gelatin-based candies sold in a variety of shapes and colors.
Ripening is a process in fruits that causes them to become more palatable. In general, fruit becomes sweeter, less green, and softer as it ripens. Even though the acidity of fruit increases as it ripens, the higher acidity level does not make the fruit seem tarter. This effect is attributed to the Brix-Acid Ratio. Climacteric fruits ripen after harvesting and so some fruits for market are picked green.
Apple butter is a highly concentrated form of apple sauce produced by long, slow cooking of apples with apple juice or water to a point where the sugar in the apples caramelizes, turning the apple butter a deep brown. The concentration of sugar gives apple butter a much longer shelf life as a preserve than apple sauce.
Sugar candy is any candy whose primary ingredient is sugar. The main types of sugar candies are hard candies, fondants, caramels, jellies, and nougats. In British English, this broad category of sugar candies is called sweets, and the name candy or sugar-candy is used only for hard candies that are nearly solid sugar.
A thickening agent or thickener is a substance which can increase the viscosity of a liquid without substantially changing its other properties. Edible thickeners are commonly used to thicken sauces, soups, and puddings without altering their taste; thickeners are also used in paints, inks, explosives, and cosmetics.
Fruit preserves are preparations of fruits whose main preserving agent is sugar and sometimes acid, often stored in glass jars and used as a condiment or spread.
Pectin lyase is a polysaccharide enzyme with a complex structure that is present in plant cell walls. It has a significant role in pectin degradation and different biotechnological and industrial applications. It can be found in different organisms.
Aiyu jelly, known in Amoy Hokkien as ogio, and as ice jelly in Singapore, is a jelly made from the gel from the seeds of the awkeotsang creeping fig found in Taiwan and East Asian countries of the same climates and latitudes. The jelly is not commonly made or found outside of Taiwan, Malaysia, and Singapore, though it can be bought fresh in specialty stores in Japan and canned in Chinatowns. It is also used in Taiwanese cuisine.
Home canning or bottling, also known colloquially as putting up or processing, is the process of preserving foods, in particular, fruits, vegetables, and meats, by packing them into glass jars and then heating the jars to create a vacuum seal and kill the organisms that would create spoilage.
Gummies, gummi candies, gummy candies, or jelly sweets are a broad category of gelatin-based chewable sweets. Gummy bears, Sour Patch Kids, and Jelly Babies are widely popular and are a well-known part of the sweets industry. Gummies are available in a wide variety of shapes, most commonly seen as colorful depictions of living things such as bears, babies, or worms. Various brands such as Bassett's, Haribo, Albanese, Betty Crocker, Hersheys, Disney and Kellogg's manufacture various forms of gummy snacks, often targeted at young children. The name "gummi" originated in Germany, with the term "jelly sweets" more common in the United Kingdom.
A peanut butter and jelly sandwich (PB&J) consists of peanut butter and fruit preserves—jelly—spread on bread. The sandwich may be open-faced, made of a single slice of bread folded over, or made using two slices of bread. The sandwich is popular in the United States, especially among children; a 2002 survey showed the average American will eat 1,500 peanut butter and jelly sandwiches before graduating from high school. There are many variations of the sandwich, starting with the basic peanut butter sandwich or jam sandwich.
Sirop de Liège is a Belgian jam or jelly-like spread. Apple and pear are principally used, often with dates: other fruit such as apricot can be used as well. Sugar and other sweeteners are not normally needed.
