Plant extract refers to the substance extracted or processed from plants (all or some part of plants) with appropriate solvents or methods, which can be used in the pharmaceutical industry, food industry, daily chemical industry and other industries.
Classification of plant extracts
1. According to the content of active ingredients, it can be divided into three types: effective monomer extract, standard extract and ratio extract;
2, according to the composition of glycosides, acids, polyphenols, polysaccharides, terpenoids, flavonoids, alkaloids, etc.
3, according to the product form can be divided into vegetable oil, extract, powder, lens and so on.
4. According to their use, plant extracts can be divided into natural pigment products, traditional Chinese medicine extracts, extract products and concentrated products.
Application of plant extracts
Green tea, hawthorn, apple, bitter gourd polypeptide extract can be used to reduce weight, reduce blood sugar and prevent and cure diabetes;
Taxol, tea polyphenols, theanine, biological flavonoids, such as lycopene, anthocyanins, etc. are used in natural anti-cancer field;
Licorice, garlic, astragalus and soybean extracts are used in the field of human immune system.
Among them, plant essential oil is an oil-like liquid with aroma and volatility, which is composed of a variety of compounds. It has physiological activity and has many functions in medical treatment, such as relieving cough, relieving asthma, sweating, relieving surface, expectorating phlegm, driving wind, relieving pain, antibacterial, etc. Among the medicinal plants, the volatile oil content is rich in Platycladus orientalis, Magnolia officinalis, Magnolia officinalis, Camphor tree, Cinnamomum officinalis, Angelica dahurica, Ligusticum chuanxiong, Angelica angelica, mint and so on.
Based on the legislative scope, concept and usage of various countries, the concept of plant extract can be accepted and recognized by all countries, and it is also the common expression way of spreading herbal medicine in all countries. Exports of plant extracts from China surpassed those of proprietary Chinese medicines as early as 1999. In Europe and the United States, plant extracts and their products (botanical drugs or food supplements) have a broad market prospects, has developed into an annual sales of nearly 8 billion US dollars of emerging industry.
Plant extracts in China are generally intermediate products, which are widely used as raw materials or auxiliary materials for medicine, health food, tobacco, cosmetics, etc. There are also many kinds of raw plants used for extraction. At present, there are more than 300 kinds of plant varieties used for industrial extraction.
The application range of plant extracts is now very wide. In addition to traditional Chinese medicine products, with the gradual increase of people’s trust and reliance on natural products, a large part of plant extracts has been used in health products and food ingredients. In addition, plant extracts have been used in cosmetics and feed in recent years.