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Plant Extract

Accoring to the name of plant extract, we can know that the primary concept of plant extract is the material extracted from the natural plant through chemical or biotechnology method. Plant extracts can be used for scientific testing, to find out what nutrients or chemicals are in the plant. Plant extracts are also used in some beauty products (shampoos, soaps, perfumes), medicines, or food flavoring (like vanilla extract). For safety, do not ingest any extracts you make, since you do not know what chemicals are present in the plant and many plant chemicals are poisonous.

Materials you will need:

10 grams of fresh plant material

350 mL of distilled water or spring water

Enamel or stainless steel pot

Coffee filter, ties with string

Hot plate or stovetop

Clean glass bottle with cover and label

Metric scales

Lab activity:
1. Put 10 grams of fresh plant material into the coffee filter. Gather and tie the top of the filter, to form a “tea bag.”
2. Put the tea bag in the sterile jar and clearly label the jar with your name, the plant name, the date and the phrase “warning: do not ingest.”
3. Bring 350 mL of water to a rolling boil in the pot. Using a potholder to handle the pot, carefully pour the water into the jar until it is full. (Note: your teacher may prefer to do this for you.)
4. Cover the jar and let it sit for an hour so the water cools and the tea brews. Swirl the jar once or twice during that time.
5. Remove the tea bag, seal the jar, and refrigerate.

Plant extract also includ herb extract. Regarding herb extract and essential oils, we are following information for your reference:

Extracts are obtained by compressing herbs typically with a hydraulic press while soaking them in alcohol or water. The alcohol or water is allowed to evaporate, the remaining substance is a concentrated extract. Extracts are the most common forms of herbal remedies found on the shelf of health food stores in the U.S.. They are also the most effective form of herbal substance used as a remedy. Alcohol free extracts a desirable to individuals who are recovering alcoholics, concerned about being exposed to alcohol and/or the alcohol solution to which the extract is packaged. Alcohol free extracts are also considered to be more desirable because of quality. Since extracts are highly concentrated amounts of the chemical composition, care should be taken to avoid over use. Tacrolimus, FK506

Most of medicinal herbs are not in their natural state fit for administration. Preparations suitable for administration are made according to pharmacopoeial directions. Herbal infusions are prepared by treating the herb to be extracted with water or alcohol. An herbal drug reduced to powder form is known as pulverata. Tinctures are solutions of the active principles of a drug in alcohol. A coarsely bruised drug boiled in water for a definite period is known as decoction.

Herbal extracts are considered to be scientific pharmacopoeial preparations. Liquid extracts, concentrated soft extracts and dry extracts are all used for industrial applications. Herbal extracts are prepared by extracting an herb of a specific particle size with suitable solvent. Depending on the solvent used, extracts are known as aqueous, alcoholic or etheral extracts. The extracts also contain marker compounds that are important for the quality of the finished product. Markers are chemically defined constituents of a herbal drug, which are of interest for quality control purposes (independent of whether they have any therapeutic activity or not). Extract of Hypericum perforatum (i.e., St. John’s Wort) is a good example of how extracts are standardised to marker compounds (0. 3% hypericin) and active constituent (2. 8% hyperforin). In the case of medicinal herbs, before a consignment is evaluated, a sample is drawn for analysis and considerable care is exercised to ensure that this sample is truly representative. Macroscopic and sensory characters are usually sufficient to enable the drugs to be identified. Thin Layer Chromatography (TLC) is a good tool for determining the botanical identity of the herb. Moisture content, extractive value and ash value are also used as standards for preliminary examination. Swelling index is standard specified, applicable to mucilage-containing drugs. Inadequate quality control of herbal drugs is a significant concern for consumers and manufacturers. Tiagabine.

Many people around the world are avid believers in the powers of herbal medicine. Indeed, many of the pharmaceutical products are derivatives of natural substances and compounds found in herbs around the world. Even today, the rainforests of the world are being scoured for clues to hidden and until now undiscovered herbs containing powerful medicinal properties.Because herbs can and often do have powerful compounds, they ought to be viewed and handled and used with respect, care and caution. Indiscriminate use without regard for interactions between multiple herbs taken simultaneously, can often lead to too dangerous medical conditions. Individuals who wish to employee the powers of herbs in their pursuit of their own and/or their families medical care, should first seek the guidance of experts well versed in the use of herbal medicine. Solviolence.org