Cancer is one of diseases caused by cell division that is uncontrollable. Cervical cancer is a cancer that suffered by many women. Alternative medicine of cancer disease is use black garlic. Black garlic is the result of processing the garlic with high temperature and humidity without addition of other substances. In that process occur Maillard reaction that cause changes in the color, smell, and taste of the original on the garlic. Such reaction also lead to an increase some bioactive compounds such as S-allyl cysteine (SAC), amino acids, flavonoids, and polyphenols. To determine the toxic properties of black garlic extract, it is necessary to do isolation of polyphenolic compounds and toxicity test against Artemia salina leach. When calculated by SPSS application, the obtained LC 50 values of black garlic extract on the aging prosess time variations of 30 days and 40 days showed concentration of 682.433 and 572.403 ppm.

Free radicals are generated in the body due to pollution and unhealthy lifestyle. Unbalanced levels of free radicals and natural antioxidants in the body may induce oxidative stress (OS). OS is responsible for several illnesses, including diabetes mellitus, cancer, and cardiovascular disease. The antioxidants can potentially increase the defense mechanism against OS and protect human health. The study aimed to analyze the catechins' role as antioxidants. The catechins can upregulate antioxidant enzymes, scavenge free radicals, protect the DNA by intercalating to the helixes, and create chelation due to numerous hydroxyl moieties attached to the aromatic ring, which protects the structural integrity through electron delocalization. Epigallocatechin gallate (EGCG), a catechin with the greatest antioxidant capacity, has ortho-phenolic hydroxyl groups which potentially in binding free radicals. Moreover, the case study showed that dose-dependent treatment of tea had some benefits for human health. Humans with anemia and menopause cannot consume tea in high doses, which could worsen the condition. Conversely, humans with thalassemia are suggested to take tea to decrease the iron in their bodies. This review is expected to be a further study reference, mainly to clarify the EGCG process in restoring antioxidant enzymes and activating the thioredoxin antioxidant system.