Nowadays people focus on herbs, especially utilizing the plants that exist in our environment. One example is a cashew plant (Psidium guajava Linn). Based on research this plant is good for healing and treating wounds and other skin infections. So in research, we will make bath soap from guava, because this plant is effective for medicinal plants. Researchers have proven that this plant is more effective against diseases especially on the skin.
Guava is rich in tannins, phenols, triterpenes, flavonoids, essential oils, saponins, carotenoids, lectins, vitamins, fiber and fatty acids. Guava fruit is higher in vitamin C than oranges (80 mg of vitamin C in 100 g of fruit) and contains an adequate amount of vitamin A as well. Guava fruit is also a good source of pectin – dietary fiber. Guava leaves are rich in flavonoids, in particular, quercetin. Many of these guava therapeutic activities are associated with the flavonoid. Flavonoids have demonstrated antibacterial activity. Quercetin is thought to contribute to the effects of guava anti-diarrhea; it is able to relax the intestinal smooth muscles and inhibit intestinal contractions.
In addition, other flavonoids and guava leaf triterpenes show antispasmodic activity. Guava also has antioxidant properties that are associated with polyphenols found in the leaves. Guava’s main plant chemicals include: alanine, alpha-humulene, alpha-hydroxyursolic acid, alpha-linolenic acid, alpha-selinene, amritoside, araban, arabinose, arabopyranosides, arjunolic acid, aromadendrene, ascorbic acid, ascorbigen, Asiatic acid, aspartic acid , avicularin, benzaldehyde, butanal, carotenoid, caryophyllene, catechol-tannin, crataegolic acid, D-galactose, D-galacturonic acid, ellagic acid, ethyl octanoate, essential oils, flavonoids, gallic acid, glutamic acid, goreishic acid, guafine, guavacoumaric, guaijavarin, guajiverine, guajivolic acid, guajavolide, guavenoic acid, guajavanoic acid, histidine, hyperin, ilelatifol D, isoneriucoumaric acid, Isoquercetin, jacoumaric acid, lectin, leucocyanidins, limonene, linoleic acid, linolenic acid, lysine, mecocyanin, myricetin, myristic acid, nerolidiol, obtusinin, octanol, oleanolic acid, oleic acid, oxalic acid, palmitic acid, palmitoleic acid, pectin, polyphenol, psidiolic acid, quercetin, quercitrin, serine, sesquiguavene, tannins, terpen compounds, and ursolic acid.
A. Guava Leaf Extract
A total of 50 grams of fresh green guava leaves at 250 ml of water input and boil for about 10 minutes.
One-half cup vegetable oil or cooking oil (approximately 300 ml), 3 tablespoons of NaOH (approximately 15 grams), 500 ml of water and 250 ml of guava leaf extract
C. Making Soap
A total of 500 ml of water and one half vegetable oil / fry mixed and stir for 30 minutes. Pour the guava leaf extract in the water and oil solution, and stir for 30 minutes. Then we add 3 tablespoons of caustic soda and stir for about 30 minutes. After starting to solidify the mixture into the mold and cooled or dried in a place not exposed to direct sunlight
D. Soap testing:
After 15 days the soap will be tested for prevention or healing. We are some respondents, these respondents are people who have skin injuries or just to feel after using this leaf herbal soap on their skin when they bathe and afterwards.
If you get a good response from the respondents it can be concluded that this soap is good for their skin.