The synergism of natural compounds in the pursuit of safe and healthier food.
Food producers apply modern processing techniques and use a variety of preservative additives to guarantee safe food and a longer shelflife. Regrettably many of these impact the sensory characteristics of the foodstuffs, such as colour, texture, and flavour, which can result in low consumer acceptance. Additionally, strategies used to reduce growth of spoilage and pathogenic bacteria are not selective enough and may inactivate also desired microbiota. Food is usually overdosed with antimicrobials that are supplemented 'just in case.' Consequently, food producers are searching for natural preservation methods that are not harmful to humans. Nature offers a wide spectrum of biologically active (phyto) chemicals that can be used as potential natural preservatives. Compounds with bacterial growth-limiting properties are detected in all parts of plants, including their leaves, flowers, fruits, roots, etc. These are mostly acids, alcohols, medium and long-chain organic acids, terpenic compounds, and their derivatives. This study focused on the effectiveness of plant extracts, i.e., synergism between terpenoids and medium chain fatty acids in cured cooked meat. Bacterial strains that were tested include typical members of the spoilage microflora in vacuum (Lactobacillus curvatus) and MA-packed meats (Brochothrix thermosphacta). These were isolated and identified in a separate study. L. curvatus was observed to be very resistant against either terpenoids or fatty acids when used separately, whereas its growth was strongly inhibited when both chemicals were combined. Growth of B. thermosphacta was significantly inhibited when antimicrobial compounds were solely applied, whereas a blend of terpenoids and fatty acids showed an almost bactericidal effect.
Szczepaniak
S
S
Laboratory for Process Microbial Ecology and Bioinspirational Management (PME&BIM), Department of Microbial & Molecular Systems (M2S), Lessius University College/De Nayer Campus, Scientia Terrae Research Institute, Sint-Katelijne-Waver, Belgium. Slawomir.Szczepaniak@biw.kuleuven.be
Polanska
M
M
Van Assche
A
A
Moloney
R
R
Willems
K A
KA
D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001688:Biological Products / Q000494:pharmacology*; D058640:Brochothrix / Q000187:drug effects / Q000254:growth & development; D005227:Fatty Acids / Q000494:pharmacology; D005516:Food Microbiology; D018857:Food Packaging / Q000379:methods; D005519:Food Preservation / Q000379:methods*; D007778:Lactobacillus / Q000187:drug effects / Q000254:growth & development; D008460:Meat / Q000382:microbiology; D010936:Plant Extracts / Q000494:pharmacology*; D013552:Swine; D013729:Terpenes / Q000494:pharmacology; D014618:Vacuum
D000900:Anti-Bacterial Agents; D001688:Biological Products; D005227:Fatty Acids; D010936:Plant Extracts; D013729:Terpenes
J Nat Prod. 2001 Apr;64(4):487-90
11325232
J Biosci. 2003 Jun;28(4):363-4
12799482
Int J Food Microbiol. 2002 Mar 25;74(1-2):101-9
11929164
J Appl Microbiol. 2000 Feb;88(2):308-16
10736000
Arch Microbiol. 2000 Oct;174(4):233-8
11081791
Appl Environ Microbiol. 2004 Jun;70(6):3582-7
15184160
Appl Environ Microbiol. 2002 Nov;68(11):5374-8
12406727
Appl Environ Microbiol. 2003 Jul;69(7):3945-51
12839765
Appl Environ Microbiol. 2004 Sep;70(9):5672-8
15345457
Anticancer Res. 2001 Jan-Feb;21(1A):275-80
11299746
Int J Food Microbiol. 2001 Aug 5;67(3):187-95
11518428
Appl Environ Microbiol. 1996 Sep;62(9):3094-100
8795195
Meat Sci. 2005 Mar;69(3):371-80
22062974
J Food Prot. 1999 Sep;62(9):1004-10
10492474
Appl Environ Microbiol. 1999 Oct;65(10):4606-10
10508096
Appl Environ Microbiol. 1997 Oct;63(10):3887-94
9327552
J Appl Microbiol. 2001 Sep;91(3):453-62
11556910
Life Sci. 2001 Jan 5;68(7):739-49
11205866
Folia Microbiol (Praha). 2003;48(6):731-5
15058184
Antimicrob Agents Chemother. 2001 Feb;45(2):517-24
11158749
Int J Food Microbiol. 2004 Dec 1;97(1):63-9
15527919
J Agric Food Chem. 2001 Sep;49(9):4168-70
11559104
Appl Environ Microbiol. 2002 Apr;68(4):1561-8
11916669
Int J Food Microbiol. 2004 Aug 1;94(3):223-53
15246235
Appl Environ Microbiol. 1999 Jul;65(7):2857-62
10388676