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Foam Food Container
A foam food container is a form of disposable food packaging for various foods and beverages, such as processed instant noodles, raw meat from supermarkets, ice cream from ice cream parlors, cooked food from delicatessens or food stalls, or beverages like "coffee to go". They are also commonly used to serve takeout food from restaurants, and are also available by request for diners who wish to take home the remainder of their meal. The foam is a good thermal insulator, making the container easy to carry as well as keeping the food at the temperature it had when filled into the container, whether hot or cold. Construction and composition Foam take-out containers are made from expanded polystyrene (EPS) foam, or another type of polystyrene foam, and produced by injecting the foam into a mold. They are usually white in color, although they may be printed or impressed with a company logo or other message. EPS foam is sometimes incorrectly called Styrofoam as a generic term. Styrofoa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clamshell (container)
A clamshell is a one-piece container consisting of two halves joined by a hinge area which allows the structure to come together to close. Clamshells can be made to be reusable and reclosable or can be sealed securely. Construction Clamshell containers can be made of a variety of materials. Plastics such as polystyrene, polyester, PVC, foam sheets, etc. The material can be made by thermoforming or can be injection molded into the desired shapes. A single piece of material is used for the top and bottom with a "living hinge" that is integral to the material, rather than added separately. Clamshell packaging works great for packages that need to hold heavy products, or items like electronics that are a target for theft. Folding cartons made of paperboard or molded pulp can also be of a clamshell shape. It can also be made of cellulose fiber such as sugarcane-bagasse, wheatstraw, wood pulp, etc. Closing Clamshells can use a variety of means of closing or sealing. Some have sel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Francisco
San Francisco (; Spanish language, Spanish for "Francis of Assisi, Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the List of California cities by population, fourth most populous in California and List of United States cities by population, 17th most populous in the United States, with 815,201 residents as of 2021. It covers a land area of , at the end of the San Francisco Peninsula, making it the second most densely populated large U.S. city after New York City, and the County statistics of the United States, fifth most densely populated U.S. county, behind only four of the five New York City boroughs. Among the 91 U.S. cities proper with over 250,000 residents, San Francisco was ranked first by per capita income (at $160,749) and sixth by aggregate income as of 2021. Colloquial nicknames for San Francisco include ''SF'', ''San Fran'', ''The '', ''Frisco'', and '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyhydroxyalkanoates
Polyhydroxyalkanoates or PHAs are polyesters produced in nature by numerous microorganisms, including through bacterial fermentation of sugars or lipids. When produced by bacteria they serve as both a source of energy and as a carbon store. More than 150 different monomers can be combined within this family to give materials with extremely different properties. These plastics are biodegradable and are used in the production of bioplastics. They can be either thermoplastic or elastomeric materials, with melting points ranging from 40 to 180 °C. The mechanical properties and biocompatibility of PHA can also be changed by blending, modifying the surface or combining PHA with other polymers, enzymes and inorganic materials, making it possible for a wider range of applications. Biosynthesis To induce PHA production in a laboratory setting, a culture of a micro-organism such as '' Cupriavidus necator'' can be placed in a suitable medium and fed appropriate nutrients so that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biodegradable Plastic
Biodegradable plastics are plastics that can be decomposed by the action of living organisms, usually microbes, into water, carbon dioxide, and biomass. Biodegradable plastics are commonly produced with renewable raw materials, micro-organisms, petrochemicals, or combinations of all three. While the words "bioplastic" and "biodegradable plastic" are similar, they are not synonymous. Not all bioplastics (plastics derived partly or entirely from biomass) are biodegradable, and some biodegradable plastics are fully petroleum based. As more companies are keen to be seen as having "Green" credentials, solutions such as using bioplastics are being investigated and implemented more. However there are many skeptics who believe that bioplastics will not solve problems others expect. History Polyhydroxyalkanoate (PHA) was first observed in bacteria in 1888 by Martinus Beijerinck. In 1926, French microbiologist Maurice Lemoigne chemically identified the polymer after extracting it from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudomonas Putida
''Pseudomonas putida'' is a Gram-negative, rod-shaped, saprotrophic soil bacterium. Based on 16S rRNA analysis, ''P. putida'' was taxonomically confirmed to be a ''Pseudomonas'' species (''sensu stricto'') and placed, along with several other species, in the ''P. putida'' group, to which it lends its name. However, phylogenomic analysis of complete genomes from the entire ''Pseudomonas'' genus clearly showed that the genomes that were named as ''P. putida'' did not form a monophyletic clade, but were dispersed and formed a wider evolutionary group (the putida group) that included other species as well, such as ''P. alkylphenolia, P. alloputida, P. monteilii, P. cremoricolorata, P. fulva, P. parafulva, P. entomophila, P. mosselii, P. plecoglossicida'' and several genomic species (new species which are currentely not validely defined as new species. A variety of ''P. putida'', called multiplasmid hydrocarbon-degrading ''Pseudomonas'', is the first patented organism in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methanogen
Methanogens are microorganisms that produce methane as a metabolic byproduct in hypoxic conditions. They are prokaryotic and belong to the domain Archaea. All known methanogens are members of the archaeal phylum Euryarchaeota. Methanogens are common in wetlands, where they are responsible for marsh gas, and in the digestive tracts of animals such as ruminants and many humans, where they are responsible for the methane content of belching in ruminants and flatulence in humans. In marine sediments, the biological production of methane, also termed methanogenesis, is generally confined to where sulfates are depleted, below the top layers. Moreover, methanogenic archaea populations play an indispensable role in anaerobic wastewater treatments. Others are extremophiles, found in environments such as hot springs and submarine hydrothermal vents as well as in the "solid" rock of Earth's crust, kilometers below the surface. Physical description Methanogens are coccoid (spherical shap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Styrene
Styrene () is an organic compound with the chemical formula C6H5CH=CH2. This derivative of benzene is a colorless oily liquid, although aged samples can appear yellowish. The compound evaporates easily and has a sweet smell, although high concentrations have a less pleasant odor. Styrene is the precursor to polystyrene and several copolymers. Approximately 25 million tonnes of styrene were produced in 2010, increasing to around 35 million tonnes by 2018. Natural occurrence Styrene is named after storax balsam (often commercially sold as ''styrax''), the resin of Liquidambar trees of the Altingiaceae plant family. Styrene occurs naturally in small quantities in some plants and foods (cinnamon, coffee beans, balsam tree (other), balsam trees and peanuts) and is also found in coal tar. History In 1839, the German apothecary Eduard Simon isolated a volatile liquid from the resin (called ''storax'' or ''styrax'' (Latin)) of the Liquidambar styraciflua, American sweetgu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biodegrade
Biodegradation is the breakdown of organic matter by microorganisms, such as bacteria and fungi. It is generally assumed to be a natural process, which differentiates it from composting. Composting is a human-driven process in which biodegradation occurs under a specific set of circumstances. The process of biodegradation is threefold: first an object undergoes biodeterioration, which is the mechanical weakening of its structure; then follows biofragmentation, which is the breakdown of materials by microorganisms; and finally assimilation, which is the incorporation of the old material into new cells. In practice, almost all chemical compounds and materials are subject to biodegradation, the key element being time. Things like vegetables may degrade within days, while glass and some plastics take many millennia to decompose. A standard for biodegradability used by the European Union is that greater than 90% of the original material must be converted into , water and minerals by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Chinese Cuisine
Canadian Chinese cuisine (french: Cuisine chinoise canadienne) is a popular style of Canadian cooking original to take-out and dine-in eateries found across Canada. It was the first form of commercially available Chinese food in Canada. This cooking style was invented by early Cantonese immigrants who adapted traditional Chinese recipes to Western tastes and the available ingredients. This cuisine developed in a similar process to American Chinese cuisine. History Chinese workers were employed in the 1800s by Chinese labour contractors during the construction of the Canadian Pacific Railway linking Montreal, Quebec, with Vancouver, British Columbia. Many of those workers who stayed once the railway was completed resorted to opening small inexpensive restaurants or working as cooks in mining and logging camps, canneries, and in the private homes of the upper classes in cities and towns. They prepared variations on traditional Cantonese food that were well received by local pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Chinese Cuisine
American Chinese cuisine is a cuisine derived from Chinese cuisine that was developed by Chinese Americans. The dishes served in many North American Chinese restaurants are adapted to American tastes and often differ significantly from those found in China. History Chinese immigrants arrived in the United States seeking employment as miners and railroad workers. As larger groups arrived, laws were put in place preventing them from owning land. They mostly lived together in ghettos, individually referred to as "Chinatown". Here the immigrants started their own small businesses, including restaurants and laundry services. By the 19th century, the Chinese community in San Francisco operated sophisticated and sometimes luxurious restaurants patronized mainly by Chinese. The restaurants in smaller towns (mostly owned by Chinese immigrants) served food based on what their customers requested, anything ranging from pork chop sandwiches and apple pie, to beans and eggs. Many o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hong Kong Cuisine
Hong Kong cuisine is mainly influenced by Cantonese cuisine, European cuisines (especially British cuisine) and non-Cantonese Chinese cuisines (especially Hakka, Teochew, Hokkien and Shanghainese), as well as Japanese, Korean and Southeast Asian cuisines, due to Hong Kong's past as a British colony and a long history of being an international port of commerce. Complex combinations and international gourmet expertise have given Hong Kong the labels of "Gourmet Paradise" and "World's Fair of Food".Sterling, Richard. Chong, Elizabeth. Qin, Lushan Charles 001(2001). ''World Food Hong Kong''. Hong Kong: Lonely Planet Publishing. . Background Modern Hong Kong has a predominantly service-based economy, and restaurant businesses serve as a main economic contributor. With the fourth-densest population per square metre in the world and serving a population of 7 million, Hong Kong is host to a restaurant industry with intense competition. Due to its small geographical size, Hong Kong c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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