In our daily life, we probably have the habit of consuming and using fruit juices like lemon, pineapple, or papaya. Onion juice, on the other hand, is certainly not a common consumer product.
And yet, this somewhat harmless vegetable juice has a lot of benefits, whether drunk or used in some way. So we are going to explore the benefits that onion juice can bring us.
The composition of the onion
The scientific name for the onion is “Allium Cepa L.”. The plant is part of the Liliaceae family, and is likely native to southwestern Asia, although it has been cultivated in other warm climates before, including Egypt (1). An onion comes in different sizes and types. The largest onions can reach 70 cm.
The main nutrients in onion are:
- Amino acids: glutamic acids, arginine, lysine, and glycine;
- Minerals: potassium, phosphorus, calcium, manganese, sodium, sulfur. In small amounts, you have iron, manganese, zinc, copper, and selenium;
- Vitamins: vitamin C, vitamin E, vitamin B, provitamin A, and folic acid;
- Essential oils with sulfur components: dipropyl disulfide and methyl methanesulfonate;
- The fibers: you have cellulose, hemicellulose, and pectin;
Besides these elements, the onion is also composed mainly of water. Water makes up about 90% of the vegetable if it is fresh.
Thus, according to popular beliefs, onion is very rich in mineral contributions, but also in other components that are highly useful for the human body.
The active elements of onion
Onions not only provide flavor, but they also provide health-promoting phytochemicals. Onion contains a pungent, volatile component that stimulates the tear glands and mucous membranes of the upper respiratory tract (3).
Of all the healthy compounds in onions, two stand out in particular: sulfur and quercetin, both of which are powerful antioxidants. They have each been shown to help neutralize free radicals in the body and protect cell membranes in the body from damage.
White onions contain very little quercetin, so it’s best to stick with yellow and red onion varieties. Most medical professionals recommend eating raw onions for maximum benefit. This invites you to consume onion juice.
In addition to quercetin, onions also contain phytochemicals known as disulfides, trisulfides, Stephens, and vinyl dithiins. These compounds have a variety of functional health properties, including anti-cancer and anti-microbial activities.
Onions, on the other hand, are low in sodium and contain no fat. This makes onion juice an ideal drink to fight against health problems related to high blood pressure and cholesterol.
Onion juice is also low in calories with just 30 calories per serving. Onions are cholesterol-free and provide dietary fiber, vitamin C, vitamin B6, and other key nutrients.
As for the strong smell of onion, it is due to alliins, which are amino acids. When the onion is cut or crushed, the alliin inside the onion is converted by an enzymatic reaction into allicin, and it breaks down into sulfide compounds.
Sulphurous compounds are aromatic and this is what gives onion, and all plants in the onion family, their distinctive scent.
The benefits of onion juice for the human body
- Diabetes prevention: A single serving of onions contains a lot of biotins (4). Biotin has many positive impacts on your health, one of which is fighting the symptoms associated with type 2 diabetes. Research suggests that a combination of biotin and chromium may help regulate blood sugar and even decrease insulin resistance.
- Healthy skin: Biotin is also important for healthy skin. It is used to treat fragile nails, to prevent hair loss, and to maintain healthy skin. If you consume onion juice regularly, you will ensure young and beautiful skin.
- Improved immunity: Onions contain vitamin C and phytochemicals that increase the effectiveness of vitamin C in your body. What this means is that onion juices help to have a healthier and more efficient immune system.
- Cancer prevention: Quercetin plays a key role here. It is a plant flavonoid (it means plant pigment) that has powerful antioxidants that fight cancer-causing free radicals. Free radicals are chemical compounds that damage cell membranes and cause cell death.
- Onion juice relieves stress: Quercetin doesn’t stop there. It also helps protect your body from stress. When you are stressed, your body produces cortisol. Although cortisol production is completely normal, too much can damage muscle tissue and cause protein breakdown in the body. In times of prolonged stress, quercetin suppresses the enzyme required for the release of cortisol, and therefore, helps manage stress.
- Anti-inflammatory: Onion juices have anti-inflammatory properties that help people with joint pain and arthritis.
- Low blood pressure: The sulfur in onions acts as a natural blood thinner and prevents the collection of blood platelets. Onion juice is therefore a great way to lower blood pressure and prevent the risk of heart attack or stroke. Additionally, quercetin also helps prevent plaque buildup in the arteries which is also good against the risk of heart attacks.
- Against digestion problems: Onions are high in fiber, which is good for maintaining a healthy and regular digestive system. Fiber prevents digestive pain and breaks down food (5).
- Bone density: Onion juices build bone density, especially for older women. Studies have found that postmenopausal women who incorporate onions into their diet have a 20% lower risk of disease.
- Cholesterol: Consuming raw onion juice promotes the production of HDL. HDL is the good cholesterol needed for good health in the body. On the other hand, onion also helps protect the body against LDL, the bad cholesterol, thanks to its antioxidant properties.
Onion juice recipes
Onion juice for the hair
To help your hair grow faster, nothing beats onion juice. You will need:
- 3 red onions
- 3 teaspoons of honey
Remove the skins from the onions. Then get rid of them from both ends. Finally, rinse them with cold water. You can use a scraper, blender, juicer, or juice extractor to collect the onion juice. For juicers and juicers, you’ll need an extra onion or two to get the amount you need.
If you are collecting your onion juice from a blender or scraper, here are the steps to follow: After obtaining the paste, filter your juice using a fine-mesh sieve. Squeeze the dough with the back of a spoon to collect as much juice as possible.
Once the juice is collected, add your honey and stir well so that the two ingredients combine perfectly. Spread the mixture on your hair, especially at the roots. Let your hair sit for about half an hour, then rinse. Preferably, use a neutral component or shampoo for rinsing (6).
Benefits for your hair
Onion juice helps your hair shine. Thanks to its active compounds, it has anti-bacterial properties to fight against diseases of the scalp.
Onion juice also helps hair growth.
Roostertail with onions and fruit
- 1 onion
- 2 carrots
- ½ apple
- ½ cup of beets
- ½ finger of ginger
Wash and cut into pieces (if necessary) your ingredients. Put them in your machine to obtain a delicious fruit onion juice.
You have in this juice several nutrients from apple, ginger, carrots, beet, and of course onion.
Indications and contraindications for the use of onion juice
Onion juice is typically used to treat digestion problems, including loss of appetite, stomach, and gallbladder disorders. Onion juice also helps treat heart and blood vessel problems, including chest pain, high blood pressure, and hardening of the arteries. It is also used to treat mouth and throat pain, whooping cough, bronchitis, asthma, dehydration, intestinal gas, parasitic worms, and diabetes.
Some people use onion juice as a diuretic to increase urine output. Onion is also applied directly to the skin for insect bites, wounds, minor burns, boils, warts, and bruises. Being a commonly used food in many recipes, onion is generally not a health hazard except in cases of allergy, overconsumption, or expired product. This implies that certain precautions must be taken for those who use onion as a medicinal treatment.
For this, it is strongly recommended to seek the advice of your doctor, especially for information on the elements (drugs and other treatment) and foods that interact with the different effects of onion. But in the context of usual consumption for food, using a moderate amount of onion is enough to avoid possible health problems.
Considering the different virtues and importance of onion in your kitchen, we suggest that you consume onion juice from time to time in the case of the prevention of certain diseases.
Our Coq Tail onion juice will help you to consume this juice better. You can create other onion juices from this recipe.