1. مقدمة:
2. المركبات الفعالة بيولوجيا في الكيفير(Kefir Bioactive Compounds):
تم تقييم تخمر الكِفِير بحبيبات وعلى ركائز مختلفة
ومجموعة متنوعة من المركبات النشطة بيولوجيًا، مثل الأحماض العضوية، CO2، H2O2، الإيثانول، الببتيدات النشطة بيولوجيا،
exopolysaccharides (الكيفيران)، sphingomyelin والبكتيريوسينات bacteriocins (شكل 1) ،قد تعمل هذه المركبات
بشكل مستقل أو معًا لإنتاج الفوائد الصحية المختلفة التي تعزى إلى استهلاك الكِفِير
(Garrote et
al.2010 ,Farag et al 2020 ؛ Rattray2011 و O’Connell ،).
شكل (1): أهم المركبات
الفعالة بيولوجيا التي تعزى لها الفوائد الصحية المختلفة للكيفير
3. الدراسات العلمية والبحثية المثبتة للفوائد الصحية للكيفير:
منذ فترة طويلة يُستخدم الكِفِير في أوروبا الشرقية لفوائده الصحية المزعومة ،ولكن
مثله مثل معظم الأطعمة التي توصف بأنها تعزز الصحة في
البلدان والثقافات الأخرى فإنه يتم قبول منافعها بوصفها معرفةً مشتركة دون أي دليل
علمي ،ومثالا على ذلك يعتبر في روسيا تناول الكِفِير يوميا ممارسةً معتادة في
العديد من المستشفيات ؛لأنه يُعتقد أنه "معزِّز للصِّحة العامة"، ولا
سيما في الانتعاش من أمراض الجهاز الهضمي، ويُنصح للأمهات باستخدامه خلال الفطام.
يُلاحظ أنّ الإنترنت مليء بالشهادات التي لا
تدعمها الأبحاث العلمية ،ولكن مع تنامي الاهتمام بتأثيرات الكِفِير الصحية من قبل خبراء الغذاء والتغذية العلاجية والأطباء
والصيادلة والبيولوجيين، ازداد حجم البحث وتعمقت الدراسات إلى أن قدمت عديد الأدلة
القوية والدامغة على فوائد الصحية الباهرة. (جدول1)
جدول (1): الدراسات العلمية والبحثية المثبتة للفوائد الصحية للكيفير
Kefir type or product نوع الكيفير أو المنتج |
النتائج |
Effect / Activity التأثير /الفعالية |
|
Farnworth, 2005; Sarkar, 2007 |
kefir grains |
some kefir grains show β-galactosidase enzyme activity, which stays active
when consumed, and kefir contains less lactose than milk |
Anti-Lactose Intolerance مضاد لعدم تحمّل اللاكتوز |
de Vrese et al. (1992) |
kefir |
demonstrated that pigs fed with kefir showed a significant increase in
galactose plasma concentrations, suggesting improvement of intestinal lactose
hydrolysis by the microbial enzyme β-galactosidase |
|
Maeda, et al. (2004) |
kefiran |
it reduces the level of glucose in the blood
and maintains the normal blood sugar level |
Anti-diabetic مضاد للسكري |
Wang et al. (2009 |
Lactobacillus plantarum MA2 |
significant reduction in serum levels of
total cholesterol, low density lipoproteins (LDL) and triglycerides, while
there was no change in high density lipoprotein (HDL-C) levels in mice fed
cholesterol-rich a diet supplemented with Lactobacillus plantarum MA2. Moreover,
total cholesterol and triglycerides in the liver were also reduced.
Cholesterol and triglycerides in animal feces, on the other hand, increased
significantly |
Hypocholesterolemic مخفض للكولستيرول |
(Liu et al., 2006 |
kefir |
reduction of serum triglyceride and
cholesterol levels, especially the non-HDL-C fraction. |
|
Thoreux and Schmucker (2001), |
feeding with kefir |
increase in the specific mucosal immune
response (IgA) against the cholera toxin in mice |
Immunomodulatory معدّل للمناعة |
Vinderola et al. (2005) |
kefir |
immunomodulation ability of kefir in the
immune response of the intestinal mucosa of mice was demonstrated. |
|
Recently, Hong et al. (2009) |
LAB isolated from kefir grains |
in
vitro, the immunomodulating capacity of LAB isolated from kefir grains was demonstrated,
suggesting their influence on the secretion of the proinflammatory cytokines
IL-6 and TNF-α by TLR-2. |
|
. Adiloğlu A,
Gönülateş N, Işler M, Senol A. 2013 |
kefir Bioactive peptides |
induce activation of macrophages and
phagocytosis and nitric oxide (NO) production |
|
. Liu J-R, Wang S-Y, Lin Y-Y, Lin C-W2002 ; Tellez A,
Corredig M, Brovko LY, Griffiths MW. 2010; . Jain S, Yadav H,
Sinha PR, Marotta F. 2009; . |
The secretion of TNF-α and cytokines such as
IL-5 [34], IL-6 [35], IL-1β [35, 36], IL-12 [36] is increased, and secretion
of IL-8 is decreased. [34]. |
||
34. Liu J-R, Wang S-Y, Lin Y-Y, Lin C-W 2002 ; |
kefir Bioactive peptides |
High level of IL-5 and TNF-α will lead to
high level of IgA secretion. The decreased level of IL-8 may control inflammatory
response by suppressing chemotaxis and activation of neutrophils |
|
37. Hong WS,
Chen YP, Chen MJ. 2010; 38. Díaz-Ropero M, Martin R, Sierra S, Lara-Villoslada F, Rodriguez J, Xaus
J, et al. 2007 ; |
Suppressed T helper 2 immune response and
activated T helper 1 immune response induce anti-allergic effect |
||
(Farnworth, 2005; Furukawa et al., 1992). |
kefiran |
Stimulation of the immune system may also
occur due to the action of exopolysaccharides found in kefir grains |
|
Medrano et al. (2011) |
observed that kefiran was able to modify the
balance of the immune cells in the intestinal mucosa- |
||
Rodrigues et al., 2005 |
Kefir gel and kefiran |
mice after a seven-day treatment |
Anti-inflammatory مضاد للإلتهابات |
(Deniz et al., 2003 |
Kefir gel and kefiran |
a model in which granulomatous tissue and
writhing is induced by acetic acid in mice |
|
Husseini et al. (2012) |
Kefir gel and kefiran |
burns infected with Pseudomonas aeruginosa in
mice |
Healing Activity فعالية شفائية |
Huseini et al. [123] |
kefir gels |
kefir gels were very effective in the
treatment of severe burns, with less inflammation and better epithelization
and scar formation than the silver sulfadiazine (Silvadene) positive control |
|
42. Ozcan A, Kaya N, Atakisi O, Karapehlivan M, Atakisi E, Cenesiz S. 2009; |
kefir |
increases the level of glutathione peroxidase
and decreases the level of malondialdehyde, involved in the control of
oxidative stress |
Antioxidant / anti-ageing مضاد للأكسدة /مضاد للشيخوخة |
43. Liu J-R, Lin Y-Y, Chen M-J, Chen L-J, Lin C-W 2005 ; |
kefir |
kefir can bind to
1,1-diphenyl-2-picrylhydrazyl (DPPH) and superoxide radicals and also inhibit
the linoleic acid peroxidation |
|
Guven and Gulmez (2003) |
kefir |
higher protective effect against damage
induced in mice by carbon tetrachloride |
|
Ghoneum et al. 2015 |
Lactobacillus kefiri |
Probiotics fermentation technology (PFT)
kefir grain product stimulated the production of antiviral cytokines, IFN-α
and IFN-λ(IL29) in DCs. Additionally, PFT at 100 µg/mL activated moDCs prime
CD4+T cells and significantly increased the levels of IL-10, IFN-γ, and TNF-α
by 1.7 |
Antiviral مضاد فيروسي |
. Santos et al. (2003) |
kefir grains lactobacilli |
E. coli, L. monocytogenes, Salmonella
Typhimurium, S. Enteritidis, Shigella flexneri and Y. enterocolitica |
Antibacterial مضاد بكتيري |
. Silva et al. (2009 |
brown sugar kefir |
Candida albicans, Salmonella Typhi, Shigella
sonnei, Staphylococcus aureus and E. coli by kefir cultured in brown sugar |
|
Chifiriuc et al. (2011 |
milk fermented with kefir grains |
Bacillus subtilis, S. aureus, E. coli, E. faecalis and S. Enteritidis |
|
(Rodrigues et al., 2005 |
kefiran |
bacteria and C. albicans). |
|
(Rodrigues et al., 2005 |
kefiran |
C. albicans. |
Antifungal مضاد فطري |
Gamba et al.2016 |
kefir fermented milk kefir cell-free supernatants (CFS) |
Aspergillus flavus AFUNL5 |
|
kefir supernatants |
Fusarium graminearum germination, growth, and
toxin production inhibition |
||
Teruya K, Myojin-Maekawa Y, Shimamoto F, Watanabe H, Nakamichi N, Tokumaru
K, et al |
fermented milk kefir |
Protective effect against X-ray irradiation-induced
intestinal damage in B6C3F1 mice... |
Antiradiation مضاد إشعاعي |
Matsuu M, Shichijo K, Okaichi K, Wen CY, Fukuda E, Nakashima M, et al |
fermented milk kefir |
The protective effect of fermented milk kefir
on radiation induced apoptosis in colonic crypt cells of rats |
|
45. Güzel-Seydim Z, Grene A, Tas T. 2006. |
High levels of conjugated linoleic acid
isomers and butyric, palmitic, palmitoleic and oleic acids in kefir |
lower induced mutagenicity by methyl methane
sulfonate, sodium azide and aflatoxin B1 |
Anti‑mutagenic مضاد للطفرات |
تعليقات
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