Health Benefits
In addition to vitamins and minerals, beet juice and powder also contain nitrates. Nitrates are a naturally-occurring substance found in beets and many other vegetables. Dietary nitrate helps improve vascular function, or healthy blood flow.
Some of the many health benefits of beet juice and beet powder include: 
Athletic performance
Drinking beet juice may improve athletic performance and exercise endurance. In a recent study, drinking beet juice daily improved the performance of 12 trained bicyclists.  Another study showed  that elite distance runners benefitted from regularly drinking beet juice. Beet juice has this effect because it contains nitrates, which increase the amount of oxygen a person can use while engaged in heavy exercise.
Blood pressure
Drinking beet juice may help lower blood pressure in people with hypertension, or high blood pressure. The nitrates in beet juice help lower blood pressure and improve blood flow. Lowering your blood pressure can help protect you from heart attacks and stroke.
Blood sugar
Studies have shown drinking beet juice may help people maintain lower blood sugar levels after eating. Beet juice may help people with obesity be more sensitive to insulin and reduce their blood sugar levels. Although further research is needed, these results could be promising for people with diabetes or other issues related to blood sugar.
Nutrition
Beet juice is a source of calcium, iron, and potassium. All three minerals are important to keep your body healthy and in good shape.  Beet powder also contains the essential minerals iron, potassium, and magnesium. 
 
Amounts and Dosage
Some products recommend 3–6 g of powder, while others suggest taking 2–3 teaspoons. On beetroot juice products — usually intended for athletes — manufacturers may suggest drinking 140 milliliters per day.
Additionally, taking too much beetroot juice may increase blood levels of nitrates. This can encourage the formation of N-nitroso compounds (NOCs), which can be carcinogenic chemicals that induce additional side effects.
 
Storage Directions
Keep it in a cool and dry place away from moisture and sunlight. Keep the powder in a dark airtight container out of moisture and to keep its colour at the longest
 
To prevent beetroot powder from oxidation and maintain its color, you can consider using an antioxidant ingredient such as ascorbic acid (vitamin C). Ascorbic acid acts as a natural antioxidant and can help inhibit the oxidation process.
Here's how you can use ascorbic acid to prevent oxidation of beetroot powder:
Mix: Thoroughly mix a small amount of ascorbic acid powder with the beetroot powder. The ratio will depend on the quantity of beetroot powder you are using, but a general guideline is to use about 0.5% to 1% ascorbic acid by weight of the beetroot powder.
Store: Transfer the mixture to an airtight container or resealable bag, ensuring there is minimal exposure to air. Oxygen is one of the factors that contribute to the oxidation of beetroot powder.
Use: When using the beetroot powder in recipes or beverages, make sure to seal the container tightly after each use to minimize contact with air and moisture.
Recipes
Add to sauces, gravies, soups, or beverages.
Adding it to fresh pasta, pizza, or bread dough.
Add to smoothie
https://www.yummly.com/recipes/beetroot-powder