Nutritional balance of skimmed milk
This article offers descriptive data regarding the nutritional balance of skimmed milk. These data were collected for a research on milk and milk alternatives in New Zealand between 2007 and 2008 (Perezgonzalez, 20081).
Skimmed milk (including skim, low-fat, and trim milk, as well as fat-free, and super-trim milk) is that containing very little fat (around 0.2%). This article, however, analyzes the nutritional balance of skimmed milk beyond its fat content. Indeed, the average skimmed milk (in this sample) is low in fat and saturated fat, high in protein, adequate in carbohydrate but high in sugar4, low in fiber, and high in sodium (for its energetic content).
On average, skimmed milk has a nutritional balance of BNI 123.16s, being particularly unbalanced towards excess of sugar.
Skimmed milk appears as relatively unbalanced according to international Recommended Dietary Intakes (RDIs), although less so according to U.S. and Canada's standards, which allow for a higher content of sugars.
|Illustration 3: Nutritional balance across different RDIs (skimmed milk)|
|Meadow Fresh trim (North Island)||Goodman Fielder||109.58||129.58||59.31||109.31||87.31|
|Home Brand trim milk||Progressive||117.62||137.62||67.27||117.27||95.27|
|Anchor Xtra calcium boost||Fonterra||124.03||144.03||73.97||123.97||101.97|
|Anchor Super Trim||Fonterra||126.91||146.91||76.62||126.62||104.62|
|WeightWatchers skim milk||WeightWatchers||126.97||146.97||76.68||126.68||104.68|
|Farmgate Dairy extra slim||United Milk||127.16||147.16||76.88||126.88||104.88|
|Basics skim milk powder||Basics||127.42||147.42||77.11||127.11||105.11|
|Meadow Fresh Calci Trim high-calcium||Goodman Fielder||129.10||149.10||78.70||128.70||106.70|
|Pams skim milk powder||Pams||131.76||151.76||81.76||131.76||109.76|
|(Source: Perezgonzalez, 20081)|
|Illustration 4: Correlations between RDIs|
Correlations between indexes are high and positive (and significant at the 0.10 cut-off point, which seems appropriate given the small sample size). These correlations indicate that the skimmed milk products being compared tend to form a similar hierarchy when indexed using different international standards.
- The original research was an exploratory study on the nutritional balance of milk and milk alternatives in New Zealand in 2007-2008.
- The initial research sample included 44 milk and alternative milk products (ie, milk, soymilk and rice milk)1. The food products were collected in a convenient manner, looking more for a variety of brands than a random sampling of the same.
- The results in this study simply describe the 'subsample' of skimmed milk products within the original sample: ie, 9 brands of skimmed milk3.
Materials & analysis
- Milk products were purchased from local supermarket chains in Palmerston North, New Zealand.
- Nutrition information for each milk product was retrieved from the nutritional information panel on each item, to be assessed using the Balanced Nutrition Index™ (BNI™) technology (see Perezgonzalez, 20112).
- SPSS-v16 was used for variable computations, including BNI and international indexes, and statistical analysis, which included descriptives and correlations.
Some of the products may be traded with Australia and internationally, especially UHT milk and milk solids. Thus, the results of this study may be generalizable to the following populations (in order of decreasing generalization power):
- Australia and other international exporting destinations trading New Zealand milk.
- Internationally, if one assumes milk to be of approximately similar nutritional composition anywhere.
Want to know more?
- BNI™ database
- The database offers individual nutrition analyses for foods, including the milk and alternative milk products referred to in above article.
- BNI™ journal (2011, issue 3) - Milk and milk alternatives in New Zealand in 2007-2008
- This issue of the Balanced Nutrition Index™ journal collates all BNI™ nutrition information for the original sample in a single book.
- Wiki of Science - Balance Nutrition Index™ (BNI™)
- This Wiki of Science page offers more information about the BNI™ technology.
- Wiki of Science - Nutritional balance of milk and milk alternatives
- These Wiki of Science pages offer more information for other milk categories: standard milk, semi-skimmed milk, standard soymilk, low-fat soymilk, flavored low-fat soymilk, and rice milk.
Jose D PEREZGONZALEZ (2011). Massey University, Turitea Campus, Private Bag 11-222, Palmerston North 4442, New Zealand. (JDPerezgonzalez).
|Other interesting sites|
Wiki of Science
The Balanced Nutrition Index