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| Flour (food) | |
|---|---|
| Name | Flour |
| Caption | Milled wheat flour |
| Type | Powdered ingredient |
| Main ingredients | Wheat, rye, corn, rice, legumes, tubers |
| Region | Worldwide |
Flour (food) is a finely ground powder made by milling seeds, roots, or legumes, used as a primary ingredient in many traditional and industrial foods. It functions as the structural and textural base in breads, pastries, noodles, and batters and plays a central role in cuisines from China to France, Mexico, and India. The production and selection of flour intersect with agricultural systems, food science, trade, and public health.
Flour denotes powdered plant-derived materials such as wheat flour, rye flour, maize (corn) flour, rice flour, barley flour, oat flour, and legume flours like chickpea (besan) and soy flour, plus tuber flours like cassava (tapioca) flour. Specialized forms include all-purpose flour, bread flour, cake flour, self-rising flour, whole wheat flour, stone-ground flour, semolina, and durum flour. Gluten-containing varieties relate to Triticum aestivum and Triticum durum, while gluten-free options serve people linked to Celiac disease advocates and patient groups such as Coeliac UK. Industrially modified products include bleached, unbleached, enriched, fortified, and malted flours used by companies like General Mills and Archer Daniels Midland Company.
Milling historically transitioned from millstone technology to roller mills during the Industrial Revolution; modern flour milling involves cleaning, conditioning, grinding, sifting, and enrichment, operations performed in facilities owned by multinational firms such as Cargill and regional co‑ops like Archer Daniels Midland Company. Grain sourcing ties to major producing countries including the United States, Russia, Canada, Australia, and France, with logistics influenced by regulatory frameworks from agencies like the United States Department of Agriculture and trade agreements negotiated under World Trade Organization mechanisms. Processing variables—temper, bran separation, and endosperm fractionation—affect particle size distributions and functional properties measured by instruments developed in laboratories at institutions such as the University of Minnesota and Institute of Food Research.
Flour composition varies: wheat flours contain protein (gluten), carbohydrates (starch), lipids, minerals, and B vitamins; whole grain variants retain bran and germ with higher fiber and micronutrients, a focus of public health guidance from organizations like the World Health Organization and Food and Agriculture Organization. Fortification programs, as implemented by national health ministries and organizations like the Centers for Disease Control and Prevention, often add folic acid, iron, and niacin to reduce deficiency diseases. Analytical assays at research centers such as MIT quantify amylose/amylopectin ratios, protein quality, and enzymatic activity (e.g., amylase), while food chemists reference standards from bodies like the AOAC International.
Flour is central to making bread, pasta, tortilla, chapati, dumplings, pastries, cookies, cakes, crepes, and batters for frying in cuisines represented by institutions like the French Academy of Gastronomy and chefs associated with Bocuse and Alice Waters. Functional roles include gluten network formation for leavened goods, starch gelatinization in custards, thickening in sauces linked with culinary schools such as the Culinary Institute of America, and surface dusting for confectionery and bakery operations in companies like Kraft Foods.
Regional staples include wheat-based breads across Europe and the Middle East (e.g., pita), maize tortillas central to Mexico and Central America, rice flour applications in East Asia for mochi and noodles, and cassava flour in West Africa and Brazil. Cultural practices surround rituals and festivals—breads of Easter in Greece and Russia, halal and kosher baking overseen by organizations like the Orthodox Church or certification bodies—and historical events linking flour to crises such as the Irish Potato Famine’s impact on substitutes and the role of grain distribution in wartime logistics studied by historians at Cambridge University.
Flour shelf life depends on moisture, fat content, and storage conditions; whole grain flours oxidize faster due to germ lipids and may rancidify, while refined flours last longer when stored cool and dry—guidance is provided by food safety agencies like the Food and Drug Administration and Health Canada. Contamination risks include pathogenic bacteria (e.g., outbreaks investigated by the Centers for Disease Control and Prevention), mycotoxins regulated by the European Food Safety Authority, and allergen labeling enforced by agencies such as the Food Standards Agency. Best practices include vacuum sealing, refrigeration, and rotation in supply chains managed by distributors such as Sysco.
Flour production is embedded in global commodity markets traded on exchanges like the Chicago Board of Trade and influenced by policy instruments from entities such as the European Commission and United States Department of Agriculture. Environmental concerns address greenhouse gas emissions from cultivation systems studied at institutions such as Wageningen University, land use changes documented in reports by the Intergovernmental Panel on Climate Change, water footprints analyzed by researchers at Imperial College London, and biodiversity impacts debated in forums hosted by WWF and The Nature Conservancy. Economic development programs by the World Bank and International Monetary Fund consider grain value chains in food security planning, while innovations in alternative flours (e.g., from insect protein startups and legumes promoted by the Bill & Melinda Gates Foundation) aim to diversify supply and reduce environmental burdens.
Category:Food ingredients Category:Flours