Calcium stearoyl-2-lactylate

Calcium stearoyl-2-lactylate (calcium stearoyl lactylate or CSL) or E482 is a versatile, FDA approved food additive. It is one type of a commercially available lactylate. CSL is non-toxic,[3][4] biodegradable,[5] and typically manufactured using biorenewable feedstocks.[6][7] Because CSL is a safe and highly effective food additive, it is used in a wide variety of products from baked goods and desserts to packaging.[2][8][9][10]

Calcium stearoyl-2-lactylate
Names
IUPAC name
calcium 2-(2-octadecanoyloxypropanoyloxy)propanoate
Other names
E482, octadecanoic acid, 2-(1-carboxyethoxy)-1-methyl-2-oxoethyl ester, calcium salt; calcium bis(2-{[2-(stearoyloxy)propanoyl]oxy}propanoate); calcium verate; calcium stearoyl lactylate; calcium stearoyl-2-lactylate; calcium stearyl-2-lactylate; calcium stelate; stearoyl-2-lactylic acid, calcium salt; calcium alpha-(alpha-(stearoyloxy)propionyloxy)propionate; calcium 2-(1-carboxyethoxy)-1-methyl-2-oxoethyloctadecanoate; stearic acid, ester with lactate of lactic acid, calcium salt; stearic acid ester with lactic acid bimol. ester calcium salt; calcium bis(2-(1-carboxylatoethoxy)-1-methyl-2-oxoethyl) distearate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.024.851
EC Number
  • 227-335-7
E number E482 (thickeners, ...)
UNII
Properties
C48H86CaO12
Molar mass 895.282 g·mol−1
Appearance a cream-colored nonhygroscopic powder with a caramel odor[1][2]
Melting point 45 °C (113 °F; 318 K)[2]
sparingly soluble[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

As described by the Food Chemicals Codex 7th edition, CSL is a cream-colored powder.[1] CSL is currently manufactured by the esterification of stearic acid and lactic acid with partial neutralization using food-grade hydrated lime (calcium hydroxide). Commercial grade CSL is a mixture of calcium salts of stearoyl lactic acid, with minor proportions of other salts of related acids. The HLB for CSL is 5.1. It is slightly soluble in hot water. The pH of a 2% aqueous suspension is approximately 4.7.[2]

Food labeling requirements

To be labeled as CSL for sale within the United States, the product must conform to the specifications detailed in 21 CFR 172.844.[8] In the EU, the product must conform to the specifications detailed in Regulation (EC) No 96/77.[11] Tests for these specifications can be found in the Food Chemical Codex.[1] Acceptance criteria for these two regions are as follows:

Specific Test Acceptance Criterion (FCC) Acceptance Criterion (EU)
Acid Value 50 - 86 50 - 130
Calcium Content 4.2% - 5.2% 1% - 5.2%
Ester Value 125 - 164 125 - 190
Total Recoverable Lactic Acid 32.0% - 38.0% 15% - 40%

To be labeled as CSL for sale in other regions, the product must conform to the specifications detailed in that region's codex.

Food applications and maximum use levels

CSL finds widespread application in baked goods, cereals, pastas, instant rice, desserts, icings, fillings, puddings, toppings, sugar confectionaries, powdered beverage mixes, creamers, cream liqueurs, dehydrated potatoes, snack dips, sauces, gravies, chewing gum, dietetic foods, minced and diced canned meats, and mostarda di frutta.[9][12] In the United States, approved uses and use levels are described in 21 CFR 172.844,[8] 21 CFR 176.170[13] and 21 CFR 177.120.[10] while the corresponding regulations in the EU are listed in Regulation (EC) No 95/2.[9]

United States European Union
Application Maximum use level Application Maximum use level Application Maximum use level Application Maximum use level
Yeast-leavened bakery products 0.5% of flour Fine baked goods 5 g/kg Bread 3 g/kg Breakfast cereals 5 g/kg
Liquid and frozen egg whites 0.05% Fat emulsions 10 g/kg Desserts 5 g/kg Sugar confectionery 5 g/kg
Dried egg whites 0.5% Beverage whiteners 3 g/kg Hot powder beverage mixes 2 g/l Dietetic foods 2 g/l
Whipped vegetable oil topping 0.3% Quick-cook rice 4 g/kg Minced and diced canned meats 4 g/kg Mostarda di frutta 2 g/kg
Dehydrated potatoes 0.5% Cereal-based snacks 2 g/kg Cereal- and potato-based snacks 5 g/kg Chewing gum 2 g/kg
Paper and paperboard packaging component Not limited Emulsified liqueur 8 g/l Spirits <15% alcohol 8 g/l
Cellophane 0.5% weight of cellophane

The largest application of CSL is in yeast leavened bakery products. Although CSL was introduced to the market first, most applications use SSL. The main reason for the preference of SSL over CSL is that CSL has less crumb softening effects than SSL. However, CSL is still preferred in some applications, such as lean hearth bread-type formulations. In these applications, CSL is preferred because CSL performs better than SSL as a dough strengthener, while the finished product does not require a soft crumb or a perfectly symmetrical loaf shape.[14]

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References
  1. "Calcium Stearoyl Lactylate". Food Chemical Codex (7 ed.). pp. 157–159.
  2. Ash, M.; Ash, I. (2004). Handbook of Green Chemicals (2 ed.). Endicott, NY: Synapse Information Resources. p. 400.
  3. JECFA, ed. (1974). "Toxicological Evaluation of Some Food Additives Including Anticaking Agents, Antimicrobials, Antioxidants, Emulsifiers and Thickening Agents 539. Stearoyl Lactic Acid, Calcium and Sodium Salts". Seventeenth Report of the Joint FAO/WHO Expert Committee on Food Additives, Who Food Additive Series 5.
  4. Lamb, J.; Hentz, K.; Schmitt, D.; Tran, N.; Jonker, D.; Junker, K. (2010). "A one-year oral toxicity study of sodium stearoyl lactylate (SSL) in rats". Food and Chemical Toxicology. 48 (10): 2663–2669. doi:10.1016/j.fct.2010.06.037. PMID 20600527.
  5. Schaefer, E.C; Matthews, M.E (2007). "Fatty Acids, C16-18 and C18-Unsaturated, Reaction Products with Lactic Acid and Monosodium Lactate (CAS# 847904-46-5): Ready Biodegradability by the Carbon Dioxide Evolution Test Method, Project No. 645E-101 for Caravan Ingredients". Easton, Maryland: Wildlife International, Ltd. Cite journal requires |journal= (help)
  6. Markley, K.S. (1960). "Historical and General". In Markley, K.S. (ed.). Fatty Acids Their Chemistry, Properties, Production, and Uses Part 1. New York: Interscience Publishers, Inc. pp. 16–21.
  7. US 5892109, Baniel, A.M.; A.M. Eval & J. Mizrahi et al., "Lactic Acid Production, Separation, and/or Recovery Process", issued Apr. 6, 1999
  8. "Calcium stearoyl-2-lactylate". Title 21 Code of Federal Regulations, part 172. January 1, 2010.
  9. "Regulation (EC) No 95/2 of the European Parliament and of the Council of 20 February 1995 on Food Additives Other Than Colours and Sweeteners" (PDF). Official Journal of the European Union: L61/1–63. 1995-03-18.
  10. "Cellophane". Title 21 Code of Federal Regulations, part 172. January 1, 2010.
  11. "Regulation (EC) No 96/77 of the European Parliament and of the Council of 2 December 1996 on Laying Down Specific Purity Criteria on Food Additives Other Than Colours and Sweeteners". Official Journal of the European Union: L339/1–171. 1996-12-30.
  12. "Sodium stearoyl lactylate". Title 21 Code of Federal Regulations, part 172. January 1, 2010.
  13. "Components of paper and paperboard in contact with aqueous and fatty foods". Title 21 Code of Federal Regulations, part 172. January 1, 2010.
  14. Boutte, T.; Skogerson, L. (2004). "Stearoyl-2-lactylates and oleoyl lactylates". In Whitehurst, R.J (ed.). Emulsifiers in Food Technology. Oxford: Blackwell Publishing. pp. 207–225. doi:10.1002/9780470995747.ch9. ISBN 9780470995747.
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