The present study was conducted to review the phytochemical composition, as well as nutritional and pharmacological values of Allium cepa L. (Onion). Onion is cultivated all over the world.  Onion bulbs are composed of polysaccharides such as peptides, fructans, flavonoids (mostly quercetin), saccharose and organosulfur compounds having salutary effects on human health. Onion is beneficial for human health since it has a high nutritional value. The nutritional constituents of an onion bulb are crude oil, vitamin E, sodium, potassium, and zinc. The onion bulb has the potential to reduce diseases such as stomach cancer, osteoporosis, and brain cancer in human beings. Additionally, onion is antidiabetic, anti-inflammatory, anti-scar, antispasmodic, antiseptic, anti-genotoxic, anti-mutagenic, diuretic, anti-parasitic, antimicrobial, antipyretic, and analgesic. Copyright(c) The Authors

The present study was conducted to review the phytochemical composition, nutritional and pharmacological values of Allium cepa L. (Onion). Attempts have been made to compile the findings of 75 articles into a single manuscript. Onion is cultivated all over the world. The onion bulbs are comprised of polysaccharides including peptides, fructans, flavonoids (mostly quercetin), saccharose and organosulfur compounds having salutary effects on human health. The onion in the diet gives us a positive response in nutritional manner. The nutritional contents of onion bulb are crude oil, vitamin E, sodium, potassium, and zinc. The onion bulb has the potential to reduce the problem of stomach cancer, osteoporosis, and brain cancer in human beings. In addition, onion is antidiabetic, anti-inflammatory, anti-scar, antispasmodic, antiseptic, anti-genotoxic, anti-mutagenic, diuretic,anti-parasitic, antimicrobial, antipyretic, and Analgesic.

Coagulation is one of the process in water treatment that mainly reducing turbidity of water by adding the coagulant such chemical or natural coagulant. Chemical coagulant such as Alum is widely used as it is efficient in removing tubidity. However, there are some adversed impact of chemical as coagulant to human and environment specifically. In this study, the effectiveness of Artocarpus Heterophyllus seed as natural coagulant were measured. There are two types the natural coagulant from Artocarpus Heterophyllus were considered in this study such as raw and dried seed. Besides, two different extraction process of coagulant by using distilled water and Sodium Chloride (1M NaCl) were used to determine the efficiency. The result showed dried Artocarpus Heterophyllus seed (1M NaCl) at 20mg/L achieved the optimum dosage of coagulant compared to dried Artocarpus Heterophyllus seed (distilled water), raw Artocarpus Heterophyllus seed (distilled water) and raw Artocarpus Heterophyllus seed (1M NaCl) in removing turbidity. It reduced up to 50% turbidity, and 70 %suspended solid after the treatment process. It also showed that salt Sodium Chloride (NaCl) can be used as addictive in treating the water.