The flowers are 8–10cm (3–4in) in diameter, white to pale yellow with a dark red spot at the base of each petal, and have a stout, conspicuous calyx at the base, 1–2cm (0.39–0.79in) wide, enlarging to 3–3.5cm (1.2–1.4in) and becoming fleshy and a deep crimson red as the fruit matures, which takes about six months. A meta-analysis of studies published in 2015, found that drinking hibiscus tea significantly lowered both systolic and diastolic blood pressure. More studies are needed to confirm the results. Cholesterol While hibiscus tea may be a safe and natural way to help lower blood pressure, it is not recommended for those who are taking medications to treat high blood pressure, as it may interact with these drugs ( 8). Summary

In fact, one test-tube study found that hibiscus extract inhibited the activity of E. coli, a strain of bacteria that can cause symptoms such as cramping, gas, and diarrhea ( 26). China and Thailand are the largest producers and control much of the world supply. [47] The world's best roselle comes from Sudan and Nigeria, b. Mexico, Egypt, Senegal, Tanzania, Mali and Jamaica are also important suppliers but production is mostly used domestically. [48] Kelsa ~ Hau Za Cin:: ZOMI DAILY". www.zomidaily.org. 3 January 2015. Archived from the original on 2022-08-12. Diabetes and hypertension are lifetime risk diseases untreated but must be controlled by taking medication regularly. Drug dependence has an impact on increasing the economic burden on families and the government, drab, and emerging fear of side effects so that patients do not want to consume drugs that tend to increase the risk of complications and comorbidities. Therefore, it is very necessary to discover traditional medicines or herbal medicine that is cheap and easily cultivable. The discovery and development of herbal medicines is a priority and crucial issue in Indonesia today. Rosella is one of the most popular herbal plants in Indonesia [ 8]. Rosella has long been used to treat various diseases. Rosella is a tropical plant; therefore, drab Indonesia's tropical climate is a very fertile land for growing and developing rosella. In fact, a review of 7 studies with a total of 362 participants concluded that hibiscus tea did not significantly reduce total cholesterol or triglyceride levels ( 13).

One concern that does exist is testicular toxicity, which occurs fairly reliably at 200mg/kg or above in animals but has not been investigated in humans. Roselle appears to be anti-fertility in men, inducing abnormal sperm morphology. In females, there was a series of studies suggesting Roselle could cause abnormal (higher) birth weights in offspring with a delay of pubertal onset; for the most part these are attributed to the appetite suppressing effect causing maternal malnutrition, with no per se mechanisms harming the pup (via lactation) currently known. A study was conducted to estimate the amount of outcrossing under local conditions in Malaysia. It was found that outcrossing occurred at a very low rate of about 0.02%. However, this rate is much lower in comparison to estimates of natural cross-pollination of between 0.20% and 0.68% as reported in Jamaica. Duke, James A. (7 January 1998). " Hibiscus sabdariffa L." Handbook of Energy Crops. Center for New Crops & Plant Products, Purdue University. Roselle is an easy to grow shrub and reaches tall heights. It can be easily identified with its bright red stems. It produces a lot of appealing flowers which have a distinctive look. And also, at every node, it produces a calyx. Fresh as well as dried calyces are an essential part and are used in food preparation. Uses of the Roselle Plant

Increasingly, the Roselle flower is being made into potpourri – quite simply because of its exotic aroma and pleasant bright red appearance; a bit of a waste of such a dominant plant if you ask me, but it takes all sorts… Try Roselle Tea or Juice For Yourself According to the book “Healing Herbal Teas,” fresh hibiscus flowers contain around 6.7 mg of ascorbic acid, a form of vitamin C, which is one of the more essential nutrients needed by the body.The interactions of Roselle and weight loss are not too clear-cut, and it seems to be highly intertwined with studies on Roselle toxicity; Roselle is known to be toxic in higher doses, and weight loss more often than not precedes chronic toxicity. For studies that note weight loss without toxicity, it seems to be related to reduced food intake in rats and mice rather than direct fat burning effects. A 2013 review of studies reported that very high doses of hibiscus extract could potentially cause liver damage. The same review reported that hibiscus extract was shown to interact with hydrochlorothiazide (a diuretic) in animals and with acetaminophen in humans. Teh rosella terbuat dari campuran daun, kelopak, dan pucuk bunga rosella. Karena rasanya yang asam, teh rosella kerap disebut sour tea. Manfaat Teh Rosella Bagi Kesehatan Namun, bila Anda memiliki gangguan fungsi hati, sebaiknya konsultasikan dengan dokter terlebih dahulu sebelum mengonsumsi teh rosella. Hal ini dikarenakan konsumsi teh rosella secara berlebihan dapat meningkatkan risiko keracunan hati. Selain itu, teh rosella juga tidak disarankan untuk dikonsumsi oleh ibu hamil atau menyusui. In Australia, roselle is known as the rosella or rosella fruit. [4] It is naturalised in Australia and its introduction is thought to have been from interactions with Makassar traders. [5] [6] Australia also has a native Rosella, Hibiscus heterophyllus, which is indigenous to eastern parts of New South Wales and Queensland and is one of about 40 species of Hibiscus native to Australia. [7] Africa [ edit ]

The seed capsule in the Roselle fruit is known for its diuretic and tonic properties. It is hence used for the following purposes: King, Arno (2016-07-12). "Jam of the tropics: growing and using Rosella |". GardenDrum. Archived from the original on 2022-08-13 . Retrieved 2021-09-09.

12 Roselle Plant Health Benefits

More large-scale studies examining the effects of hibiscus tea on blood cholesterol and triglyceride levels are needed to determine its potential effects in the general population. Summary

Stephens, James M. (2018). "Roselle — Hibiscus sabdariffa L." Horticultural Sciences Department, University of Florida. HS659. Our findings regarding the efficacy of roselle tea in controlling blood lipid profiles is associated with the chemical content of rosella. Phenolic anthocyanins in rosella have antihyperlipidemia activity [ 27, 29]. Polyphenols have antiatherogenic, antilipogenic, and antihypertensive effects [ 9]. Anthocyanins, flavonoids, and polyphenols work in reducing total cholesterol and LDL [ 25]. Research in animal models shows that the administration of rosella seed extract for 10weeks decreased lipid oxidation, LDL, serum cholesterol, triglycerides, and fructose. They concluded that rosella has antiatherogenic, cardioprotective, antidiabetic, and antioxidant activities [ 30, 31]. Rosella is reducing very low-density lipoprotein cholesterol (VLDL-c) and increasing serum HDL [ 26]. Rosella has a hypolipidemic effect through its pathway by inhibiting the synthesis of triacylglycerol [ 26]. Some studies have demonstrated positive effects when examining the effects of concentrated hibiscus on managing body weight. Selain manfaat-manfaat di atas, rosella juga mengandung senyawa antioksidan yang dapat mengatasi peradangan dan mengurangi risiko kanker. Roselle is used in Nigeria to make a refreshing drink known as Zobo and natural fruit juices of pineapple and watermelon are added. Ginger is also sometimes added to the refreshing drink. [32]In one test-tube study, hibiscus extract impaired cell growth and reduced the invasiveness of mouth and plasma cell cancers ( 21). Hibiscus is high in polyphenols, which are compounds that have been shown to possess powerful anticancer properties ( 19, 20).