Salami

For other uses, see Salami (disambiguation).
Not to be confused with Salumi.
Winter salami

Salami is a type of cured sausage consisting of fermented and air-dried meat, typically beef or pork. Historically, salami was popular among southern and central European peasants because it stores at room temperature for up to 40 days once cut, supplementing a potentially meager or inconsistent supply of fresh meat. Countries and regions across Europe make their own traditional varieties.

Etymology

The word salami in English comes from the plural form (salami) of the Italian salame;[1] it is a singular or plural word in English for cured meats of a European, particularly Italian, style. In Romanian, Bulgarian, and Turkish, it is salam; in Hungarian, it is szalámi, while in French, German, and Dutch, it is the same as in English.

The word originates from the word sale (salt) with a termination (ame) that in Italian indicates a collective noun.[2] Thus, it originally meant "all kinds of salted (meats)". The Italian tradition of cured meats includes several styles, and the word salame soon specifically meant only the most popular kind—a salted and spiced meat, ground and extruded into an elongated and thin casing (usually, cleaned animal intestine), then left to undergo natural fermentation for several days, months, or even years.

Origin and history

Salami originated in Europe

The concept of fermentation, smoking and drying of foods, especially meat, has been around for hundreds of years. This is evident in the presence of various types of sausages found globally. As well, environmental conditions dictate what food processes are used, as seen in the Mediterranean and northern Europe where "meat products are dried to lower water activity (Aw) values, taking advantage of the long dry and sunny days, while in northern Europe, fermented sausages require smoking for further preservation."[3] The name may be derived from Latin words "salsiccia" and "salumen".[4] In Europe, the main countries that produce salami are Germany, Italy, Spain, France, and Hungary, producing "several of hundred millions kg per year."[5] Worldwide, there are many different versions of sausages, each with its own cultural and flavor profiles. For example, due to immigration to North America, European settlers brought many traditions, including fermented meats such as bologna or pepperoni.[6] Similar types of sausages are found in the Middle East, where various meats such as beef, lamb, and mutton are used, or in China where "lap cheong", translated as "intestines stuffed in the winter" are usually pork.[7] Likewise, in eastern Europe, Hungarian salami is quite popular. This particular type of salami is "intensively smoked and then its surface is inoculated with mold starters or spontaneous mold growth."[7] Additionally, each sausage has its own type of seasonings and amount of salt, making each flavor and texture unique. This wide array of variations of fermented sausages, especially in terms of salami, speaks to its ubiquitous but exclusive nature.

Ingredients of salami

Hungarian Herz Salami poster, an advertisement from Budapest, 1900

A traditional salami, with its typical marbled appearance, is made from pork or beef (sometimes specifically veal). Beef is usual in kosher and halal salami, which never include pork for religious reasons. Makers also use other meats, including venison[8] and poultry (mostly turkey).[9] Goose salami is traditional in parts of Northern Italy. Salami has also been made from horse meat.[10]Typical additional ingredients include:[11]

The maker usually ferments the raw meat mixture for a day, then stuffs it into either an edible natural or inedible cellulose casing, and hangs it up to cure. Some recipes apply heat to about 40 °C (104°F) to accelerate fermentation and drying. Higher temperatures (about 60 °C (140°F)) stop the fermentation when the salami reaches the desired pH, but the product is not fully cooked (75 °C (167°F) or higher). Makers often treat the casings with an edible mold (Penicillium) culture. The mold imparts flavor, helps the drying process, and helps prevent spoilage during curing.[12]

Salami varieties

Salami varieties include this smoked Westphalian salami with added Camembert cheese-culture

Salami varieties include:

Many Old World salami are named after their region or country of origin—such as Arles, Genoa, Hungarian, and Milano salami. Many are flavored with garlic. Some types—including some varieties from Spain (salchichón), Hungary (pick salami), and Italy (such as Neapolitan varieties that led to American pepperoni) include paprika or chili powder. Varieties also differ by coarseness or fineness of the chopped meat and size and style of the casing.


Manufacturing process

Saucisson

Though completely uncooked, salami are not raw, but cured. Salame cotto—typical of the Piedmont region in Italy—is cooked or smoked before or after curing to impart a specific flavor but not for any benefit of cooking. Before cooking, a cotto salame is considered raw and not ready to eat.

Three major stages are involved in the production of salami: preparation of raw materials, fermentation and ripening and drying. Any minor differences in the formulation of the meat or production techniques could give rise to the various kinds of salami across different countries.[14]

Salami in casing

Preparation

Before extruding mixed ingredients into their casings, the maker mixes the ground meat with salt, seasoning, They mix the ingredients vigorously to develop the protein structure (called the "primary bind"), stuff it into casings, and hang it up to cure.

Before fermentation, raw meat (usually pork or beef but depend the type of salami that is produced) is milled and mixed with other ingredients such as salt, sugar, spices and yeast,[14] and, if the particular salami variety requires it, bacterial starter culture.

Fermentation

They are then inlaid into their casings with the desired size. To achieve the flavor and texture that salami possesses, fermentation, which can also be referred to as a slow acidification process promoting a series of chemical reactions in the meat, has to take place.[15] Direct acidification of meat was found to be inappropriate for salami production since it causes protein denaturation and an uneven coagulation thereby causing an undesirable texture in the salami.[15]

For a more modern controlled fermentation, makers hang the salami in warm humid conditions for one to three days to encourage the fermenting bacteria to grow, then hang it in a cool, humid environment to slowly dry. In a traditional process, the maker skips the fermentation step and immediately hangs the salami in a cool, humid curing environment. Added sugars (usually dextrose) provide a food source for the curing bacteria.

The bacteria produce lactic acid as a waste product, which lowers the pH and coagulates the proteins, reducing the meat's water-holding capacity. The bacteria-produced acid makes the meat an inhospitable environment for pathogenic bacteria and imparts a tangy flavor that distinguishes salami from machine-dried pork. Salami flavor relies as much on how these bacteria are cultivated as it does on the quality and variety of the other ingredients. Originally, makers introduced wine into the mix, favouring the growth of other beneficial bacteria. Now, they use starter cultures.

The climate of the curing environment and casing size and style determine the drying and curing process. According to the particular variety of salami, different fermentation methods involving different acids are explored in order to create various colours and flavors. Starter cultures such as lactic acid bacteria (LAB) and coagulase-negative cocci (CNC) are most commonly used in salami production.[16] More species of LAB and CNC were discovered during the last decades and they were found to have different fermentation temperatures with variable rates of acidification.[17] Despite the fact that these bacteria can help maintain a longer shelf life for meat products and even retard the growth of pathogens, there are a few studies that argue some starter cultures may be related to the production of enterotoxins or biogenic amines that can be harmful to the human body.[17] Therefore, starter cultures have to be carefully selected by producers and properly used in fermentation.

dried salami

Drying

After fermentation, the sausage must be dried. This changes the casings from water-permeable to reasonably airtight. A white covering of either mold or flour helps prevent photo-oxidation of the meat and rancidity in the fat.

Ripening and drying happens after fermentation.[14] This stage causes the main physical and microbial changes through the large amount of water loss.[18] About half of the water evaporated and further water loss has to be prevented by packaging.[18] Nonuniform drying processes could cause the formation of a hard shell on the surface of salami. This is similar to other food products such as fruits that undergo dehydration to prevent water removal from inside which would increase the risk of diseases or spoilage-causing microbial growth.[18] Therefore, according to the size of salami which affects the speed of dehydration, a strict control of the temperature and relative humidity is being ensured in modern manufacturing of salami.[18]

Nitrates or nitrites are added to provide the cured meat color and inhibit growth of harmful bacteria from the genus Clostridium. Salt, acidity, nitrate/nitrite levels, and dryness of the fully cured salami combine to make the uncooked meat safe to consume. High quality, fresh ingredients are important to helping prevent deadly microorganisms and toxins from developing.

Properties

Italian salami

Sensory Characteristics

Salami is homogeneous in appearance and highly ductile.[19] Its quality is dependent on the quality of the raw materials and the level of technology used in its production.[19] The aroma and taste of salami are developed by enzymatic and non-enzymatic reactions.[19] The characteristic fermented meat flavour is believed to be developed by a combination of endogenous enzymatic activities and the lactic acid produced by the starter culture.[19] Lactic acid bacteria develop the tangy flavor of salami through the fermentation of carbohydrates and produces an appealing red color to the meat after fermentation, while coagulase-negative cocci can catabolize amino acid and fatty acid to produce volatile compounds.[17] The flavour itself consists of odour properties, which comes from volatile substances, and taste and tactile properties, which comes from non-volatile substances that are a result of enhancers and synergists.[19]

When smoke is applied to salami, it also affects the taste, smell, appearance, and texture. Some of these changes are due to the formation of phenolic compounds, which slow fat oxidation.[19] The pyrolysis of cellulose and hemicelluloses in the salami casing produces carbonyls, which develop the colour of the meat.[19]

More than 400 volatile compounds have been identified in different types of dry-fermented sausages.[20] For example, the organic compounds identified in Hungarian salami produced the dominant flavours of smokiness, sweetness, pungency, sourness, and cloves; secondary flavours included cooked meat, cheese, popcorn, cooked potato, mushroom, seasoning, phenols, roasting, sulfur, and sweatiness.[20] Some minor flavours included malt, garlic, fruit, pine, grass, citrus, honey, caramel, and vanilla.[20] The overall smoky note is the result of numerous phenols.[20] Whether these odorants are formed in the salami or simply transferred from the raw materials during manufacturing is unknown; systematic studies have yet to compare the odorants present in the raw materials to those in the final product.[20]

Shelf life

Salami will remain stable for long periods of time, as it has a low water activity and contains preservatives, colourings, flavourings, antioxidants and acidifying cultures.[21] Semi-ripened salami will maintain its flavour for long periods of time under retail display conditions, but it will eventually deteriorate due to the development of incipient rancidity.[21] The shelf life of salami is mainly determined by sensory deterioration, which is the result of various oxidation phenomena; pathogenic or spoilage bacteria do not readily proliferate in dry-cured sausage.[21] The main cause of flavour deterioration in dry-cured sausage is rancidity, though the possible formation of other off-flavours, such as mouldy, acid, putrid or pungent traits, may contribute to the decreased eating quality.[21]

The use of coriander essential oil in salami has been shown to increase the higher synthetic antioxidant effect of butylated hydroxytoluene, which delays lipid oxidation and the rancid aroma and taste that come with it.[22] Additionally, salami with coriander essential oil shows improvements in the the sensory attributes of taste, odor, texture, brightness, and red colour intensity.[22]

Varieties

Deutsch: 3 Sorten italienische Salami

Salami is a raw fermented sausage consisting of raw comminuted pork and/or beef meat, fat, and additives, such as curing salt, spices, sugar, and a starter culture.[20] There are multiple different types of Salami meat in various markets around the world. In northern and central Europe, smoked salamis are preferred, and ripening is controlled by the addition of lactic acid-producing starter cultures, whereas in southern Europe, salami is slowly air-dried and mostly mold-ripened.[20] Therefore, different preservation and drying methods are used around the world to prepare salami.

Polski: Hiszpańska salami.

Hungarian- type salami is a specialty in salami production, because it is first slightly smoked and mold-ripened afterward.[20] The salami that is of Hungarian origin, the so-called "Hungarian Winter salami", [is made of] raw pork meat, bacon, salt, spices, sugars, and sodium nitrite.[20] Szegedi téliszalámi (winter salami) is made of mangalitsa pork breed, with horse large intestine used as its casing to preserve and serve it.[23] This type acquires a grey mold cover on it and has a firm texture and excellent keeping quality after a 30% weight loss reached in 3 to 4 months.[23] Hungarian salami is one of the world’s two trade names for salami, Milano salami being the other.[23] These fermented sausages combine smoke and mold application in one. The traditional technology used to produce them is based on the Italian pre-drying technique developed during the nineteenth century, but they are smoked and their pH does not drop below 5.5, so the final flavor of the product is not acidic in taste.[23]

Dry fermented sausage ('salami aeros') is an important product of the Greek meat industry with an annual production of about 10 000 tons.[24] Its manufacture varies depending on the skill and experience of the meat manufacturer rather than a process solely based on scientific and technological means of production.[24] This type of traditional sausage, which undergoes an adventitious fermentation, is of superior quality compared to those inoculated with starters and made in industrial scale.[24] The quality of this type of traditional salami is often more expensive due to its high quality.

Naples-type salami is also a popular Southern Italian dry fermented sausage made of coarsely minced pork meat.[23] In Northeast Italy, traditional dry fermented salami sausages made of fresh pork display unique organoleptic sensory profiles characterized by accented acidity, slight sourness, and elastic semi hard consistency.[23] Other popular dry salamis in Italy are mainly made from a combination of pork and small bits of beef, seasoned with garlic; pepperoni is also made of pork and beef, and is usually smoked; and chorizo is highly spiced and smoked in comparison.[23]

In central Europe, Germany, there is Westphalian salami. It is made with fast technology from pork meat, pepper, garlic, and sometimes mustard seeds, is a smoked, firm, sliceable product with a distinct fermentation/sour flavor. The sausages are stuffed into large-diameter casings and ripened by lowering the temperature rom 24 °C to 12–14 °C until a water loss of 25% is obtained.[23]

In the Netherlands, the most popular Dutch products are finely chopped salami, Cervelat, Snijworst (with high fat content and rind added), Farmersmetworst (which is coarsely chopped), and chorizo (which is less spicy than the Spanish product).[23] In Russia, typical products are Moscow-type and Russian-type salamis made from pork and beef meat. A particular feature of Moscow- type salami is the large size of fat particles (7–8mm) that give the sausage a rough cover.[23]

Health effects

There are many aspects of salami that can be considered both detrimental and positive to human health. Salami has been found to be a possible allergen to some people due to the use of penicillium species mold starter during the drying and curing portion of processing to add flavor and stop growth of undesirable molds. These molds occur predominantly in the skin of salami.[25] Two young boys with common allergies to peanuts and pollen were shown to exhibit symptoms such as swollen eyelids and retrosternal pain after consuming certain types of salami. When pin prick allergen tests were conducted they came out negative for all of the ingredients in salami and the salami meat but was positive to the skin of salami due to mold species growing in this area.[25] Fermented pork back fat that is used to make salami has very high saturated fatty acid and cholesterol content, which can increase the risk of heart disease and pancreatitis. However, it has been shown that it is possible to replace the pork back fat in salami with extra virgin olive oil thereby changing the fatty acid profile of the salami for the better. Olive oil consists of a much larger amount of monounsaturated and polyunsaturated fatty acids, which allows this substitution to create a healthier product.[26] Salami is considered slightly acidic due to lactic acid that is present. In salami where the pork back fat was substituted for extra virgin olive oil, it has shown to have a lower ph of around 5.00 compared to its original levels of around 6.35 to 6.55 making the salami more acidic.[26] New strategies for reducing the pork back-fat content in typical italian salami.[26] These lower PH levels are healthy for humans as higher populations of lactic acid bacteria inhibit the spread of spoilage microorganisms.[26]

E. coli.

There have also been cases that have showcased some of the possible health dangers of salami. A outbreak of Escherichia coli O157 infection of a husband and wife was traced back to the consumption of dry fermented salami made with pork meat after the couple was hospitalized for bloody diarrhea.[27] This case displays the possibility that dry fermentation is not enough to kill all bacteria in the meat. There was also an outbreak E. coli O157 in 1994 with 17 cases all occurring from the consumption of pre sliced salami that was processed by one brand. A research investigation of the factory where the salami was processed found that all processing techniques and production methods complied with all regulations and there was no evidence of contamination after processing.[28] This study gives further evidence that dry fermented salami can act as an transporter of E. coli O157 bacteria strains even with proper processing.

Preservation of any meat products is important. Some fungi can create undesirable color and flavor to the contaminated meat and produce toxins. There are also fungi which are not harmful to humans such as those that are formed on the surface of dried salami which are an indication of maturation after ripening.[17] Thus, producers have to eliminate fungi that have potential risks to human health. As natural preservatives are becoming more desirable food additives than artificial preservatives in food industries, some studies about salami have been focusing on the utilization of essential oils such as oregano and clove oil as preservatives that can be applied to salami production due to their anti-fungal activities.[29] Several types of oils including rosemary, clove, oregano and sage oils were found to have different levels of inhibition effect to various types of fungi that could possibly grow on salami.[29] Since a lot of the oils contain volatile compounds whose amount can affect the flavor of the food, researchers often perform a sensory test to find such an amount of the oil that can best serve as an anti-fungal preservative but have the least effect on the flavor or appearance of the salami.[29]

See also

References

  1. ↑ "salami - definition of salami in English from the Oxford dictionary". oxforddictionaries.com.
  2. ↑ "Etimologia : salame;". etimo.it.
  3. ↑ Toldra, Fidel (2014). Handbook of Fermented Meat and Poultry. Chichester, UK: John Wiley and Sons. p. 3. ISBN 9781118522653.
  4. ↑ Toldra, Fidel (2012). Biochemistry of Fermented Meat, in Food Biochemistry and Food Processing, Second Edition. Oxford, UK: Wiley-Blackwell. p. 331. ISBN 978-0-8138-0874-1.
  5. ↑ Bertolini et. al, Massimo (December 2006). "Seasoning Process Design Optimization for an Ascending Flow Ripening Chamber". Journal of Food Engineering 77 (3). doi:10.1016/j.jfoodeng.2005.06.067.
  6. ↑ Handbook of Food Products Manufacturing - Wiley Online Library. doi:10.1002/0470113553.
  7. 1 2 Handbook of Fermented Meat and Poultry - Wiley Online Library. doi:10.1002/9781118522653.
  8. ↑ "Venison Salami". Cooks.com. Retrieved 2009-09-13.
  9. ↑ "Turkey Salami". Recipe Tips. Retrieved 2009-09-13.
  10. ↑ "Cold Cuts: Horse Salami". Parco naturale Valle del Ticino. Retrieved 2009-09-13.
  11. ↑ "Food Processing: Strategies for Quality Assessment". google.com.au.
  12. ↑ "Food Processing: Strategies for Quality Assessment". google.com.au.
  13. ↑ "Italian Salami-Salame". LifeInItaly.com. Retrieved 2010-02-12.
  14. 1 2 3 Fonseca, Gustavo Graciano; Silva Porto, Paulo Sergio; Almeida Pinto, Luiz Antonio (2006). "Reduction of Drying and Ripening Times During the Italian Type Salami Production". Trends in Applied Science Research 1 (5): 504–510. doi:10.3923/tasr.2006.504.510.
  15. 1 2 Barbut, S. (June 2010). "Color Development During Natural Fermentation and Chemical Acidification of Salami-type Products". Journal of Muscle Food 21 (3): 499–580. doi:10.1111/j.1745-4573.2009.00198.x. Retrieved 19 March 2016.
  16. ↑ Aquilanti, Lucia; Santarellia, Sara; Silvestria, Gloria; Osimania, Andrea; Petruzzellib, Annalisa; Clementia, Francesca (November 2007). "The microbial ecology of a typical Italian salami during its natural fermentation". International Journal of Food Microbiology 120 (1-2): 136–145. doi:10.1016/j.ijfoodmicro.2007.06.010. Retrieved 19 March 2016.
  17. 1 2 3 4 Vignolo, Graciela; Fontana, Cecilia; Fadda, Silvina (Feb 2010). Handbook of Meat Processing. 10.1002/9780813820897.ch22: Wiley-Blackwell. pp. 379–398. ISBN 9780813820897. Retrieved 19 March 2016.
  18. 1 2 3 4 Cevolia, Chiara; Fabbria, Angelo; Tabanellib, Giulia; Montanarib, Chiara; Gardinia, Fausto; Lanciottia, Rosalba; Guarnieria, Adriano (July 2014). "Finite element model of salami ripening process and successive storage in package". Journal of Food Engineering 132: 14–20. doi:10.1016/j.jfoodeng.2014.02.003. Retrieved 19 March 2016.
  19. 1 2 3 4 5 6 7 van Schalkwyk, D. L.; McMillin, K. W.; Booyse, Mardé; Witthuhn, R. C.; Hoffman, L. C. (2011-05-01). "Physico-chemical, microbiological, textural and sensory attributes of matured game salami produced from springbok (Antidorcas marsupialis), gemsbok (Oryx gazella), kudu (Tragelaphus strepsiceros) and zebra (Equus burchelli) harvested in Namibia". Meat Science 88 (1): 36–44. doi:10.1016/j.meatsci.2010.11.028.
  20. 1 2 3 4 5 6 7 8 9 Söllner, Kerstin; Schieberle, Peter (2009-04-09). "Decoding the Key Aroma Compounds of a Hungarian-Type Salami by Molecular Sensory Science Approaches". Journal of Agricultural and Food Chemistry 57 (10): 4319–4327. doi:10.1021/jf900402e.
  21. 1 2 3 4 Lorenzo, José Manuel; Bedia, Mario; Bañón, Sancho (2013-03-01). "Relationship between flavour deterioration and the volatile compound profile of semi-ripened sausage". Meat Science 93 (3): 614–620. doi:10.1016/j.meatsci.2012.11.006.
  22. 1 2 Marangoni, Cristiane; Moura, Neusa Fernandes de. "Sensory profile of Italian salami with coriander (Coriandrum sativum L.) essential oil". Food Science and Technology (Campinas) 31 (1): 119–123. doi:10.1590/S0101-20612011000100016. ISSN 0101-2061.
  23. 1 2 3 4 5 6 7 8 9 10 Vignolo, Graciela; Fontana, Cecilia; Fadda, Silvina (2010-01-01). Fellow, Fidel Toldrá Ph D. researchessor member, ed. Semidry and Dry Fermented Sausages. Wiley-Blackwell. pp. 379–398. doi:10.1002/9780813820897.ch22. ISBN 9780813820897.
  24. 1 2 3 Samelis, John; Metaxopoulos, John; Vlassi, Maria; Pappa, Aristea (1998-10-20). "Stability and safety of traditional Greek salami — a microbiological ecology study". International Journal of Food Microbiology 44 (1–2): 69–82. doi:10.1016/S0168-1605(98)00124-X.
  25. 1 2 Ludman, S., Perrin, Y., Caubet, J. C., & Wassenberg, J. (2013). Perplexing cases of allergy to salami. The Journal of Allergy and Clinical Immunology: In Practice, 1(1), 97-98
  26. 1 2 3 4 Del Nobilea, Matteo Alessandro; Conteb, Amalia; Incoronatob, Anna Lucia; Panzab, Olimpia; Sevia, Agostino; Marinoa, Rosaria (Jan 2009). "New strategies for reducing the pork back-fat content in typical Italian salami". Meat Science 81 (1): 263–269. doi:10.1016/j.meatsci.2008.07.026.
  27. ↑ Conedera, G., Mattiazzi, E., Russo, F., Chiesa, E., Scorzato, I., Grandesso, S., ... & Caprioli, A. (2007). A family outbreak of Escherichia coli O157 haemorrhagic colitis caused by pork meat salami. Epidemiology and infection, 135(02), 311-314
  28. ↑ Tilden, J., Jr, Young, W., McNamara, A. M., Custer, C., Boesel, B., Lambert-Fair, M. A.. . Morris, J. G., Jr. (1996). A new route of transmission for escherichia coli: Infection from dry fermented salami. American Journal of Public Health, 86(8 Pt 1), 1142-1145
  29. 1 2 3 Cenci, Aline Maria; Ugalde, Mariane Lobo; Steffens, Juliana; Valduga, Eunice; Cansian, Rogério Luis; Toniazzo, Geciane (Jan 2015). "Control of Penicillium sp. on the Surface of Italian Salami Using Essential Oils". Food technology and biotechnology 53 (3): 342. doi:10.17113/ftb.53.03.15.3877.

Further reading

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