Beets and acai berry juice contain similar amounts of calories - beet has 43 calories per 100 grams and acai berry juice has 62 calories. For macronutrient ratios, acai berry juice is lighter in protein, heavier in fat and similar to beets for carbs. Acai berry juice has a macronutrient ratio of 5:83:12 and for beets, 14:83:3 for protein, carbohydrates and fat from calories. Macro Ratios from Calories: