1. dialogue.dog
  2. Nutrient Database
  3. Tuesday, 11 June 2019
The nutrition numbers supllied by PDD for Now Foods bone meal seem off. According to the product label 1tsp = 2.8g and there are approximately 800mg of Calcium in each 2.8g of bone meal. Using these numbers from the the product label I have calculated the amount of Calcium in 100 grams of bone meal to be 28.571mg. PDD lists the amount of Calcium in 100 grams as 29,629.6296296296mg.

800mg Calcium / 2.8g Bone Meal = 28.571mg of Calcium per gram of Bone Meal

28.571mg * 100 = 2857.1mg of Calcium per 100 grams of Bone Meal

The supplied value of 29,629.6296296296mg seems high. I suspect the supplied values for Phosphorus and Magnesium are also incorrect.

https://www.nowfoods.com/supplements/bone-meal
Attachments (1)
Accepted Answer Pending Moderation
0
Votes
Undo
Using the human RDA values for Magnesium and Phosphorus and the product label I have calculated their corrected values to be
- Magnesium: 300mg / 100 grams of Bone Meal
- Phosphorus: 7500mg / 100 grams of Bone Meal

Human RDA table
https://www.wikiwand.com/en/Dietary_Reference_Intake#/Current_recommendations_for_United_States_and_Canada

Now Foods product label
https://www.nowfoods.com/supplements/bone-meal


From what I can tell the calculation at least for Calcium is very straightforward:

(mg of Calcium / grams in a serving) * 100 = mg of Calcium in 100 grams of powder

If my calculations are off I would appreciate knowing how to correctly calculate the values so that I don't make the same mistake again.
Attachments (1)
Accepted Answer Pending Moderation
-1
Votes
Undo
Hi dialogue.dog,

Your calculations are off. Please use the values from PDD as we try to be as exact as possible. However, you do bring up an important issue - supplement manufacturer's often change their formulations. At the time that it was input into PDD, Now Bone Meal was 2.7 grams per teaspoon and 800 mg of calcium. They have slightly changed their formulation so that it is 2.8 grams per teaspoon and 800 mg of calcium. Our 365 line of products will address this issue.

All of the values for Bone Meal in PDD are correct.

See attached.
Attachments (1)
Animal Nutritionist and Lead Developer for Pet Diet Designer
Accepted Answer Pending Moderation
0
Votes
Undo
From what I can tell the calculation at least for Calcium is very straightforward:

(mg of Calcium / grams in a serving) * 100 = mg of Calcium in 100 grams of powder

If my calculations are off I would appreciate knowing how to correctly calculate the values so that I don't make the same mistake again.


This is the correct method of calculation.
Animal Nutritionist and Lead Developer for Pet Diet Designer
  • Page :
  • 1


There are no replies made for this post yet.
However, you are not allowed to reply to this post.
Sorry, the discussion is currently locked. You will not be able to post a reply or a comment at the moment.