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Commodity balance sheet processing fractions

Source: R/datasets.R
cb_processing.Rd

Specifies the product fractions obtained when CBS items are processed, linking processed items to their output CBS categories.

Usage

cb_processing

Format

A tibble where each row corresponds to one processed-item / output-category combination. It contains the following columns:

  • ProcessedItem: Name of the CBS item being processed (e.g., "Apples and products", "Barley and products").

  • item_cbs: Name of the output CBS category produced by processing (e.g., "Alcohol, Non-Food").

  • Product_fraction: Conversion factor from processed input quantity to output product quantity. This can exceed 1 when the output includes added mass, such as water in beverages.

  • Value_fraction: Economic value fraction associated with the output product (numeric; largely NA in current data).

  • Required: Marks required co-product links in selected processing chains.

A fraction is a prior conversion rate per candidate output, not a mass-conserving recipe: .correct_processed() rescales it per area-year to reproduce the observed production of the output item, and several inputs declare a single lossy output (olives to olive oil at 0.20).

The one dairy row, "Milk - Excluding Butter" to "Butter, Ghee", carries the milk churned into butter and ghee, which FAOSTAT's new FBS reports as milk's processing destiny from 2010 (the old FBS does not report it at all). Without it that mass was split onto food and feed, inflating 2010 world milk food by 30.5% (#757).

Source

Derived from FAOSTAT commodity balance sheet processing assumptions. The milk-to-butter fraction of 0.045 is the median "Butter of Cow Milk" extraction rate over the 69 countries reporting one in FAO (1997), Technical Conversion Factors for Agricultural Commodities, Rome: FAO, MILK section (range 3.3-7.3%). It is consistent with the ratio implied by the FBS itself: global butter production over milk processing is 0.047 in 2010 and 0.044-0.047 across 2010-2019.

Examples

head(cb_processing)
#> # A tibble: 6 × 5
#>   ProcessedItem                item_cbs Product_fraction Value_fraction Required
#>   <chr>                        <chr>               <dbl>          <dbl>    <dbl>
#> 1 Apples and products          Alcohol…            0.199           0.05       NA
#> 2 Barley and products          Alcohol…            0.204           0.05       NA
#> 3 Cassava and products         Alcohol…            0.09           NA          NA
#> 4 Cereals, Other               Alcohol…            0.275           0.9        NA
#> 5 Fruits, Other                Alcohol…            0.199          NA          NA
#> 6 Grapes and products (excl w… Alcohol…            0.199          NA          NA