Food miles is a term which refers to the distance food is transported from the time of its production until it reaches the consumer. It is one dimension used in assessing the environmental impact of food. The concept of food miles originated in 1990 in the United Kingdom. It was conceived by Andrea Paxton, who wrote a research paper that discussed the fact that food miles are the distance that food travels from the farm it is produced on to the kitchen in which it is being consumed (Iles, 2005, p.163). Engelhaupt (2008) states, that “food miles is the distance food travels from farm to plate, are a simple way to gauge food’s impact on climate change” (p. 3482). Food travels between 1,500 to 2,500 miles (4,000 km) every time that it is delivered to the consumer. The travel of products from the farms to the consumers is 25 percent farther now than it was in 1980 (”Counting our food miles,” 2007). Some scholars believe that the pollution is created due to the globalization of trade overseas; the focus of food supply bases into fewer, larger supplies; the drastic change in the delivery pattern; increase in processing and packaging foods; and making fewer trips to the supermarket. Others state that the GHG (Greenhouse Gas) emissions are created by the production phases which create 83 percent, 8.1 tons of CO2 foot printing. (Engelhaupt, E., 2008). Recent studies in America and the UK indicate that about 80% of food emissions are produced before the food leaves the farm gate. [1] The goal of the Environmental Protection Agencies is to make people aware of the environment impacts of food miles and show the pollution percentage and the energy used to transport food over long distances, at this time there are researchers that are working to provide the public with more information.

Overview

The concept of food miles is part of a broader issue of sustainability which deals with a large range of environmental issues, including local food. The term was coined by Tim Lang (now Professor of Food Policy, City University, London) who says: “The point was to highlight the hidden ecological, social and economic consequences of food production to consumers in a simple way, one which had objective reality but also connotations.” [2] However, it has increasingly come under attack as an ineffective means of finding the true environmental impact.[3]

A DEFRA report in 2005 undertaken by researchers at AEA Technology Environment, entitled The Validity of Food Miles as an Indicator of Sustainable Development, included findings that “the direct environmental, social and economic costs of food transport are over 9 billion each year, and are dominated by congestion.”

Recent findings indicate that it is not only how far the food has traveled but the method of travel that is important to consider. The positive environmental effects of specialist organic farming may be offset by increased transportation, unless it is produced by local farms. But even then the logistics and effects on other local traffic may play a big role.[citation needed] Also, many trips by personal cars to shopping centers would have a negative environmental impact compared to a few truck loads to neighborhood stores that can be easily accessed by walking or cycling.

Food miles in business

Business leaders have adopted food miles as a model for understanding inefficiency in a food supply chain. Wal-Mart, famously focused on efficiency, was an early adopter of food miles as a profit-maximizing strategy. More recently, Wal-Mart has embraced the environmental benefits of supply chain efficiency as well. In 2006, Wal-Mart, CEO, Lee Scott said, “The benefits of the strategy are undeniable, whether you look through the lens of greenhouse gas reduction or the lens of cost savings. What has become so obvious is that ‘a green strategy’ provides better value for our customers”.[4] Wal-Mart has since made a series of environmental commitments that suggest the company is looking more holistically at supply chain sustainability, such as restricting seafood suppliers to fisheries independently certified as sustainable, a practice that may increase food miles.[4] Still it is undeniable that Wal-Mart’s strategy of using supply chains from as far away as China exorbitantly increases greenhouse emissions. They are often criticized for “green washing” and only adopting large-scale green tactics, which make them appear earth-friendly but actually have little positive environmental impact.[citation needed]

Some other alternatives for reducing food miles are to create Co-op grocery stores. A Co-op is a small business strictly owned and managed by its members. The way that this works is that people come together, they create equity and then they purchase their products. They grow organic food and their food miles are drastically reduced. “Choosing to buy organic has value, the hidden costs of shopping increase substantially when road miles are factored in”(Holt and Watson, 2008, p. 321). The first co-op was created in 1844 in England with twenty-eight people. They started out by selling just sugar, flour, butter and oatmeal. Today there are over 47,000 coop corporations in the United States alone. Not only are Co-op markets reducing the food miles, but they are also providing the consumers with healthy food, organic food. The facts and figures for 2005 state that organic foods contains higher levels of vitamin C, calcium, magnesium, iron, phosphorus and chromium; and 15 percent lower levels of nitrates (Siner, 1996).

Food processing is the set of methods and techniques used to transform raw ingredients into food or to transform food into other forms for consumption by humans or animals either in the home or by the food processing industry. Food processing typically takes clean, harvested crops or slaughtered and butchered animal products and uses these to produce attractive, marketable and often long-life food products. Similar process are used to produce animal feed.

Extreme examples of food processing include the delicate preparation of deadly fugu fish or preparing space food for consumption under zero gravity.

History

Food processing dates back to the prehistoric ages when crude processing incorporated slaughtering, fermenting, sun drying, preserving with salt, and various types of cooking (such as roasting, smoking, steaming, and oven baking). Salt-preservation was especially common for foods that constituted warrior and sailors’ diets, up until the introduction of canning methods. Evidence for the existence of these methods exists in the writings of the ancient Greek , Chaldean, Egyptian and Roman civilisations as well as archaeological evidence from Europe, North and South America and Asia. These tried and tested processing techniques remained essentially the same until the advent of the industrial revolution. Examples of ready-meals also exist from pre industrial revolution times such as the Cornish pasty and the Haggis

Modern food processing technology in the 19th and 20th century was largely developed to serve military needs. In 1809 Nicolas Appert invented a vacuum bottling technique that would supply food for French troops, and this contributed to the development of tinning and then canning by Peter Durand in 1810. Although initially expensive and somewhat hazardous due to the lead used in cans, canned goods would later become a staple around the world. Pasteurization, discovered by Louis Pasteur in 1862, was a significant advance in ensuring the micro-biological safety of food.

In the 20th century, World War II, the space race and the rising consumer society in developed countries (including the United States) contributed to the growth of food processing with such advances as spray drying, juice concentrates, freeze drying and the introduction of artificial sweeteners, colouring agents, and preservatives such as sodium benzoate. In the late 20th century products such as dried instant soups, reconstituted fruits and juices, and self cooking meals such as MRE food ration were developed.

In western Europe and North America, the second half of the 20th century witnessed a rise in the pursuit of convenience, food processors especially marketed their products to middle-class working wives and mothers. Frozen foods (often credited to Clarence Birdseye) found their success in sales of juice concentrates and “TV dinners”. [1] Processors utilised the perceived value of time to appeal to the postwar population, and this same appeal contributes to the success of convenience foods today.

Benefits

Mass production of food is much cheaper overall than individual production of meals from raw ingredients. Therefore, a large profit potential exists for the manufacturers and suppliers of precessed food products. Individuals may see a benefit in convenience, but rarely see any direct financial cost benefit in using processed food as compared to home preparation. Poor quality ingredients and sometimes questionable processing and preservation methods detract greatly from the overall benefit gained by individual consumers.

More and more people live in the cities far away from where food is grown and produced. In many families the adults are working away from home and therefore there is little time for the preparation of food based on fresh ingredients. The food industry offers products that fulfil many different needs: From peeled potatoes that only have to be boiled at home to fully prepared ready meals that can be heated up in the microwave oven within a few minutes.

Benefits of food processing include toxin removal, preservation, easing marketing and distribution tasks, and increasing food consistency. In addition, it increases seasonal availability of many foods, enables transportation of delicate perishable foods across long distances, and makes many kinds of foods safe to eat by de-activating spoilage and pathogenic micro-organisms. Modern supermarkets would not be feasible without modern food processing techniques, long voyages would not be possible, and military campaigns would be significantly more difficult and costly to execute.

Modern food processing also improves the quality of life for allergists, diabetics, and other people who cannot consume some common food elements. Food processing can also add extra nutrients such as vitamins.

Processed foods are often less susceptible to early spoilage than fresh foods, and are better suited for long distance transportation from the source to the consumer. Fresh materials, such as fresh produce and raw meats, are more likely to harbour pathogenic micro-organisms (e.g. Salmonella) capable of causing serious illnesses.

Drawbacks

In general, fresh food that has not been processed other than by washing and simple kitchen preparation, may be expected to contain a higher proportion of naturally-occurring vitamins, fiber and minerals than an equivalent product processed by the food industry. Vitamin C, for example, is destroyed by heat and therefore canned fruits have a lower content of vitamin C than fresh ones.

Food processing can lower the nutritional value of foods, and introduce hazards not encountered with naturally-occurring products. Processed foods often include food additives, such as flavourings and texture-enhancing agents, which may have little or no nutritive value, or be unhealthy. Preservatives added or created during processing to extend the ’shelf-life’ of commercially-available products, such as nitrites or sulphites, may cause adverse health effects. Use of low-cost ingredients that mimic the properties of natural ingredients (e.g. cheap chemically-hardened vegetable oils in place of more-expensive natural saturated fats or cold-pressed oils) have been shown to cause severe health problems, but are still in widespread use because of cost concerns and lack of consumer knowledge about the effects of substitute ingredients.

Processed foods often have a higher ratio of calories to other essential nutrients than unprocessed foods, a phenomenon referred to as “empty calories”. So-called junk food, produced to satisfy consumer demand for convenience and low cost, are most often mass-produced processed food products.

Because processed food ingredients are often produced in high quantities and distributed widely amongst added-value food manufacturers, failures in hygiene standards in ‘low-level’ manufacturing facilities that produce a widely-distributed basic ingredient can have serious consequences for many final products. Consequently, adequate government regulation of ingredient manufacturers is an essentially important factor in securing the production of generally-safe processed foods. Blame for failures in the process of food safety regulation therefore often fall on the governmental department entrusted with this task.

[edit] Performance parameters for food processing

When designing processes for the food industry the following performance parameters may be taken into account:

* Hygiene, e.g. measured by number of micro-organisms per ml of finished product * Energy consumption, measured e.g. by “ton of steam per ton of sugar produced” * Minimization of waste, measured e.g. by “percentage of peeling loss during the peeling of potatoes’ * Labour used, measured e.g. by “number of working hours per ton of finished product” * Minimization of cleaning stops measured e.g. by “number of hours between cleaning stops