Pork Products

Pork, cured, ham and water product, rump, bone-in, separable lean only, unheated

Parameters

Sodium: 1,070 mg
Salt, derived: 2.72 %
Water: 74.3 g
Brine concentration: 3.53 %
Moisture-protein ratio: 4.15 : 1

USDA FoodData Central, SR Legacy, FDC ID 169152. All values are per 100 g of the food as described. Retrieved 2026-09-04. Source record

How the derived figures were obtained

salt %      = sodium mg / 1000 x 2.5420 / 100 x 100
            = 1,070 / 1000 x 2.5420 = 2.720 g per 100 g
brine %     = 100 x salt / (salt + water)     [FSIS-GD-2016-0002]
            = 100 x 2.720 / (2.720 + 74.3) = 3.531 %
MPR         = water % / protein % = 74.3 / 17.9 = 4.151 : 1

Full composition, per 100 g

Nutrient	Value	Unit
Total fat	3.38	g
Water	74.3	g
Calcium	10.0	mg
Potassium	221.0	mg
Protein	17.9	g
Iron	0.67	mg
Sodium	1,070.0	mg
Cholesterol	58.0	mg
Carbohydrate	1.24	g
Energy	107.0	kcal
Saturated fat	1.10	g

What these figures do and do not say

The brine concentration above is computed from this food's own sodium and water using the FSIS formula, 100 x salt / (salt + water). It is a description of a finished commercial product, not a target. FSIS cites 10 percent brine after equalisation as the figure that prevents Staphylococcus aureus enterotoxin production during warm drying, and 9 CFR 319.106(b)(4) requires not less than 10 percent for a dry cured ham made without nitrate or nitrite.

Water activity cannot be computed from composition. It is a measurement, and it is the measurement that decides shelf stability. The published limits are 0.85 in air and 0.91 vacuum packed, both from FSIS-GD-2014-0010.

Nearby entries

Source: USDA FoodData Central, SR Legacy, published 2019-04-01. Retrieved 2026-09-04.