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Vitamin B12 nutritional status in Croatian vegans and vegetarians


Šatalić, Zvonimir; Žižić, Vesna; Pedišić, Željko; Colić Barić, Irena
Vitamin B12 nutritional status in Croatian vegans and vegetarians // 7th International Congress of Food Technologists, Biotechnologists and Nutritionists
Opatija, Hrvatska, 2011. (poster, međunarodna recenzija, sažetak, znanstveni)


Naslov
Vitamin B12 nutritional status in Croatian vegans and vegetarians

Autori
Šatalić, Zvonimir ; Žižić, Vesna ; Pedišić, Željko ; Colić Barić, Irena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
7th International Congress of Food Technologists, Biotechnologists and Nutritionists

Mjesto i datum
Opatija, Hrvatska, 20-23.09.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Vegan; vegetarian; vitamin B12; vitamin status

Sažetak
INTRODUCTION The term vegetarianism depicts a spectrum of diets with culturally dependent ratios of plant food groups. Although phytochemicals and macronutrient profile of a plant-based diets lower chronic diseases risk, there are several critical micronutrients. Vegetarians are a risk group for vitamin B12 deficiency since all foods of nonanimal origin are free from B12. A serum vitamin B12 concentration reflects dietary and supplemental intake and fortification of the national food supply. The aim of this study was to report vitamin B12 status in Croatian vegetarians. METHODOLOGY Subjects were 102 vegetarians 21-55 years old (79 women and 23 men, 9 pesco-lacto-vegetarians, 57 lacto-ovo-vegetarians and 19 vegans). Serum vitamin B12 concentration was measured using Abott AxSYM System. Seven-days weighed food records was the assessment method for dietary vitamin B12 intake. A general questionnaire provided data for vitamin B12 intake through supplements and fortified foods. RESULTS AND DISCUSSION Vitamin B12 levels above 300 or 400 pg/mL are rarely associated with B12 deficiency induced hematological or neurological diseases, respectively. Only 27.5 and 17.6 % of vegetarians had levels above 300 and 400 pg/mL, respectively. Subclinical abnormalities are thought to emerge when serum concentrations fall below 150 pg/mL and such a low level was observed in 25.5 % vegetarians. Vegans had lower (216.6 pg/mL) vitamin B12 levels than vegetarians (271.7 pg/mL), but the difference wasn’t statistically significant. Only 8.8 and 4.9 % of vegetarians reported regular use of vitamin B12 supplements and fortified foods, respectively. Diets containing 0.5 μg/d will prevent megaloblastic anemia while serum B12 appears to plateau at an intake of 6 μg/d. In this study, dietary vitamin B12 intake was low and was lower in vegans than in vegetarians (0.2 vs. 1.6 μg/d, p<0.05). CONCLUSION Vegetarians and particularly vegans are advised for use of vitamin B12 supplements or fortified food products.

Izvorni jezik
Engleski

Znanstvena područja
Prehrambena tehnologija



POVEZANOST RADA


Projekt / tema
058-0222411-2820 - Prehrana, homocistein i kvaliteta koštanog tkiva (Irena Colić-Barić, )

Ustanove
Prehrambeno-biotehnološki fakultet, Zagreb