Food is any substance that we eat to provide nutritional support for our body. Food is usually of plant or animal, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is eaten by an organism and absorbed by the organism's cells to provide energy, maintain life, or help in the growth of the body. Different species of animals have different feeding behaviors that meet the needs of their individual body intake.
We humans are highly adaptable and have adapted to obtain
food in many different ecosystems. Historically, humans secured food
through two main methods: hunting and gathering and agriculture.
As agricultural technologies increased, humans settled
into agricultural lifestyles with diets affected by the agriculture
opportunities in their geography. Geographic and cultural differences have led
to the creation of numerous cuisines, including a wide array
of ingredients, herbs, spices, techniques, and dishes.
As cultures have mixed
through international
trade and globalization, ingredients
have become more widely available beyond their geographic and cultural origins,
creating a gateway of different food traditions and practices.
Today, the majority of the food energy supplied
by the industrial food industry, which produces food with intensive
agriculture and distributes it through complex food
processing and food distribution systems.
Classification
Human food can be classified in various ways. The number and
composition of food groups can
vary. Most systems include four basic groups that describe their origin and
relative nutritional function:
1.
Vegetables and Fruit,
2.
Cereals
and Bread,
3.
Dairy,
4.
Meat
World Health Organization use
a system with nineteen food classifications:
Cereals, roots, pulses and nuts, milk, eggs, fish and shellfish,
meat, insects, vegetables, fruits, fats and oils, sweets and sugars, spices and
condiments, beverages, foods for nutritional uses, food additives, composite
dishes and savory snacks.]
Food
sources
Food can be obtained through various sources. The sources are
dependent on consumers.
1.
Herbivores
that consume the pants
2.
Carnivores
that consume those animals.
3.
Omnivores
that consume both plants and animals
Humans are omnivores that eat vegetables, fruits, cooked meat,
milk, eggs, mushrooms and seaweed.
Cereal grain is a staple food that provides more
food energy worldwide than any other type of crop.
Corn (maize), wheat, and rice account for 87%
of all grain production worldwide.
Just over half of the world’s crops are used to feed humans
(55 percent), with 36 percent grown as animal feed and 9 percent
for biofuels.
Fungi and bacteria are also used in the preparation
of fermented foods like bread, wine, cheese and yogurt.
Taste
Animals, specifically humans, have five different types of
tastes:
·
sweet
·
sour
·
salty
·
bitter
·
meaty
Cuisine
Many cultures have a recognizable cuisine, a specific set of cooking traditions
using various spices or a combination of flavors unique to that culture, which
evolves over time. Other differences include preferences (hot or cold, spicy,
etc.).
Many cultures have diversified their foods by means of
preparation, cooking methods, and manufacturing.
Some
Popular Cuisines include
1.
Italian
2.
French
3.
Japanese
4.
Chinese
5.
American
6.
Thai
7.
Arabic
8.
Indian
9.
Turkish
Each of these cuisines have their own characteristics that makes
them unique from the rest. The Diversity is usually Geographical and
ethnic. Food is eaten and typically
enjoyed through the sense of taste, the perception of flavor from eating
and drinking. Certain tastes are more enjoyable than others, for evolutionary
purpose.
Food manufacturing
Packaged foods are manufactured outside the home for
purchase. This can be as simple as a butcher preparing meat, or as
complex as a modern international food industry. Early food processing
techniques were limited by available food preservation, packaging, and
transportation. This mainly involved salting, curing,
curdling, drying, pickling, fermenting, and smoking.
Food manufacturing arose during the industrial
revolution in the 19th century. This development took advantage of
new mass markets and emerging technology, such as milling,
preservation, packaging and labeling, and transportation. It
brought the advantages of pre-prepared time-saving food to the bulk of ordinary
people who did not employ domestic servants.
At the start of the 21st century, a two-tier
structure has arisen, with a few international food processing giants
controlling a wide range of well-known food brands. There also exists a wide
array of small local or national food processing companies. Advanced
technologies have also come to change food manufacture. Computer-based control
systems, sophisticated processing and packaging methods,
and logistics and distribution advances can enhance product
quality, improve food safety, and reduce costs.
International food imports and exports
Food is traded and marketed on a global basis. The
variety and availability of food is no longer restricted by the diversity of
locally grown food or the limitations of the local growing seas. Trade
liberalization has greatly affected world food trade
Economy
Most food has always been obtained through
agriculture. With increasing concern over both the methods and products of
modern industrial agriculture, there has been a growing trend
toward sustainable agricultural practices. This approach, is affected
by consumer demand, encourages biodiversity, local self-reliance
and organic farming methods
Major influences on food production include
international organizations, national government policy (or law) and
international politics.
Problems
Food is central part of human life, problems related
to access, quality and production of food effect every aspect of human life.
1.
Nutrition and dietary problems
Between the extremes of optimal health and death
from starvation or malnutrition, there is an wide range of
disease states that can be caused or alleviated by changes in diet.
Deficiencies, excesses, and imbalances in diet can produce negative impacts on
health, which may lead to various health, psychological and behavioral
problems.
2.
Hunger and starvation
Lack of food leads to malnutrition and
ultimately starvation. This is often connected with famine, which
involves the absence of food in entire communities. This can have a devastating
and widespread effect on human health and mortality. Rationing is
sometimes used to distribute food in times of shortage, most notably during
times of war
Starvation is a significant international problem. Approximately 815 million people are undernourished, and over 16,000 children die per day from hunger-related causes.
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