scholarly journals Power Ultrasound-Assisted Impregnation of Apple Cubes with Vitamin B12

2022 ◽  
Author(s):  
Franco Emanuel Vasile ◽  
Susana Simal ◽  
Carmen Rosselló ◽  
Valeria Soledad Eim
Keyword(s):  
Vitamin B12 ◽  
Soluble Solids ◽  
Vitamin B ◽  
Microstructural Properties ◽  
Power Ultrasound ◽  
The Us ◽  
Ultrasound Assisted ◽  
Vitamin Uptake ◽  
Power Densities ◽  
Chromatic Coordinates

AbstractThis work explores the use of ultrasound (US) as a means of intensifying the impregnation of apple cubes with vitamin B12 (cyanocobalamin). The effect of different US power densities (90 and 200 WL−1) and treatment times (5, 10, and 15 min) was evaluated, on vitamin load, vitamin stability, and physicochemical and microstructural properties of the fruit matrix. The US enhanced the impregnation producing high cyanocobalamin content products (0.12–0.19 mg vitamin/g db.). Vitamin losses in the sonication medium due to US application were not significant. Impregnated samples exhibited higher moisture and lower soluble solids with respect to the untreated fruit. Changes in chromatic coordinates were well correlated to vitamin uptake. Only at the highest treatment intensities (200 WL−1, 10, and 15 min) was a marked softening observed, which agreed with the microstructural changes observed in fruit tissues. Results permit US-assisted impregnation to be considered a promising technology in the preparation of vitamin B12 fortified apple cubes.

scholarly journals Molecularly imprinted membrane for transport of urea, creatinine, and vitamin B12 as a hemodialysis candidate membrane

2021 ◽  
Vol 19 (1) ◽  
pp. 806-817
Author(s):  
Muhammad Cholid Djunaidi ◽  
Nabilah Anindita Febriola ◽  
Abdul Haris
Keyword(s):  
Polyethylene Glycol ◽  
Vitamin B12 ◽  
Kidney Function ◽  
Cross Linking ◽  
Vitamin B ◽  
Molecularly Imprinted ◽  
Selective Transport ◽  
Molecularly Imprinted Membrane ◽  
Better Than ◽  
Imprinted Membrane

Abstract High levels of urea and creatinine in the blood are a sign of decreased kidney function. To remove these substances from the blood, hemodialysis which utilizes membranes could be used. In this study, a molecularly imprinted membrane (MIM) was synthesized for the selective transport of urea. The synthesis is initiated with the polymerization of eugenol into polyeugenol and then into polyeugenoxy acetate (PA). The PA is then contacted with urea and then used as the functional polymer in the synthesis of MIM with polysulfone as the membrane base, and polyethylene glycol as the cross-linking agent. The result was later analyzed with FTIR and SEM-EDX. The membrane is then used in the transport of urea, creatinine, and vitamin B12 and then compared with the non-imprinted membrane (NIM) performance. By using UV-Vis spectrophotometry, the results showed that the membrane with 10 h heating variation is able to transport more urea and is more selective than NIM; this proves that the urea template on the MIM enables it to recognize urea molecules better than creatinine and vitamin B12. The order of transport from the best results is urea > creatinine > vitamin B12.

Röntgenspektroskopische Bestimmung der Wertigkeit des Kobalts im Vitamin B12

1954 ◽  
Vol 9 (8) ◽  
pp. 509-513 ◽  
Author(s):  
G. Boehm ◽  
A. Faessler ◽  
G. Rittmayer
Keyword(s):  
Vitamin B12 ◽  
Vitamin B

Mit einem fokussierenden Spektrographen großer Dispersion wird die Lage der K-Röntgen-absorptionskante des Kobalts in verschiedenen Verbindungen untersucht. Die Ergebnisse zeigen, daß es möglich ist, durch Bestimmung der Kantenlage die Wertigkeit des Kobalts in einer Verbindung zu bestimmen. Die Methode gestattet den eindeutigen Nachweis, daß das Kobalt im Vitamin B12 dreiwertig ist.

scholarly journals Effect of Vitamin-B1 and Vitamin-B12 on the Growth and Carotenoid Content of Haematococcus pluvialis CH-1

2015 ◽  
Vol 7 (9) ◽  
pp. 709-711
Author(s):  
Li-Xin Li ◽  
Zhi-Wei Song ◽  
Shun-Shan Duan ◽  
Ke-Jie Luo ◽  
Ting Li ◽  
...  
Keyword(s):  
Vitamin B12 ◽  
Haematococcus Pluvialis ◽  
Carotenoid Content ◽  
Vitamin B

Preparation of Cod Liver Residues and Vitamin B12 Concentrates

1954 ◽  
Vol 11 (4) ◽  
pp. 355-361 ◽  
Author(s):  
Beryl Truscott ◽  
D. G. Gage ◽  
P. L. Hoogland
Keyword(s):  
Vitamin B12 ◽  
Nutritive Value ◽  
Vitamin B ◽  
Sodium Bisulphite ◽  
Drum Drying ◽  
Different Types

As the first part of an investigation of the nutritive value of cod liver, two methods of preparation of cod liver residue were studied, as well as the effect of drum drying the residue, with and without the presence of sodium bisulphite, defatting the dried residue and extracting vitamin B12 from the dried residue.It was found that Vandenheuvel's method of preparation of residue produces very good results. The fresh residue could be dried without appreciable loss of vitamin B12 activity on a double drum dryer, operated with steam at 20 p.s.i.g. Sodium bisulphite afforded some protection during the drying. The most satisfactory results in defatting were obtained by extraction with dichloroethylene. Concentrates with vitamin B12 activity equivalent to 2–4 micrograms per milliliter were produced by extraction of dried, defatted residue with water and evaporation in vacuo.Five different types of residue were prepared for further studies.

scholarly journals The study of clinical profile and vitamin B 12 in dengue fever patients

2021 ◽  
Vol 12 (7) ◽  
pp. 47-51
Author(s):  
Mamatha Tittamegalapalya Ramalingaiah ◽  
Jeetendra Kumar Jogihalli Mood ◽  
Satyanarayana Narayanashetty ◽  
Rashmi Madappa Bhuvaneshappa
Keyword(s):  
Vitamin B12 ◽  
Hospital Stay ◽  
Dengue Fever ◽  
Platelet Transfusion ◽  
Clinical Profile ◽  
Study Patient ◽  
Vitamin B ◽  
Severe Thrombocytopenia ◽  
Duration Of Hospital Stay ◽  
Vitamin B 12

Background: Dengue is an acute infectious febrile illness characterised by thrombocytopenia and platelet dysfunction leading to bleeding manifestations. Vitamin B12 is required for platelet production in the bone marrow. So, deficiency of vitamin B12 in dengue patients can have severe thrombocytopenia. Aims and Objective: Study was aimed to know the clinical profile of dengue fever patients and to correlate serum vitamin B12 level with severity of thrombocytopenia, platelet transfusion and duration of hospital stay. Materials and Methods: This observational study was done on dengue patients for period of 3 months January 2020 to March 2020. Confirmed cases of dengue fever with NS 1 Ag positive & Ig M antibody positive were included in the study. Patient with sepsis, underlying malignancy, autoimmune disorder, hematological disorder, drugs causing thrombocytopenia were excluded from the study. Appropriate statistical methods were applied. Results: Total 50 subjects were included. Majority of subjects were in the age group 31 to 40 years. 50% were males and females respectively. Most common clinical feature was fever and bleeding manifestations. Mean Vitamin B12 was significantly lower among those with severe thrombocytopenia and highest among those with no thrombocytopenia., there was significant difference in mean Platelet transfusion and duration of hospital stay with respect to severity of Platelet count. Conclusion: Dengue fever patients with vitamin B 12 deficiency had moderate to severe thrombocytopenia and more bleeding manifestations. Those patients required more platelet transfusion and increased duration of hospital stay.

Increased intake of vitamin B12, folate, and omega-3 fatty acids to improve cognitive performance in offspring born to rats with induced hypertension during pregnancy

2018 ◽  
Vol 9 (7) ◽  
pp. 3872-3883 ◽  
Author(s):  
Nisha Kemse ◽  
Anvita Kale ◽  
Preeti Chavan-Gautam ◽  
Sadhana Joshi
Keyword(s):  
Fatty Acids ◽  
Folic Acid ◽  
Docosahexaenoic Acid ◽  
Vitamin B12 ◽  
Cognitive Performance ◽  
Vitamin B ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Induced Hypertension

Vitamin B12, folic acid, and docosahexaenoic acid levels are reported to be altered in women with preeclampsia.

Relationship of Area-Level Socioeconomic Status Indicators and Nutritional Anemias: Analysis of Folate, Vitamin B12, and Iron Deficiencies

Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 16-17
Author(s):  
Miguel Gonzalez Velez ◽  
Carolyn Mead-Harvey ◽  
Heidi E. Kosiorek ◽  
Yael Kusne ◽  
Leyla Bojanini ◽  
...  
Keyword(s):  
Socioeconomic Status ◽  
Vitamin B12 ◽  
Conflicts Of Interest ◽  
Population Level ◽  
Serum Folate ◽  
Continuous Variables ◽  
Cross Sectional ◽  
The Us ◽  
Relationship Of ◽  
The Relationship

Introduction: Serum folate (SF), vitamin B12 (B12), and iron deficiency (def) are common causes of nutritional anemias (NA). These deficiencies are usually multifactorial, with nutritional and non-nutritional causes playing a role. SF, B12, and iron levels are usually ordered in the setting of anemia, and malnutrition with or without neurologic symptoms. Clinical evidence suggests that these def have a strong dietary component and socioeconomic status (SES). The relationship of NA and area-based SES in the US has not been studied. We aimed to determine the relationship of SES with the prevalence of NA. Methods: We performed a cross-sectional analysis of adult patients with SF, B12 and iron levels at Mayo Clinic Arizona and Florida between 2010 and 2018. Race was classified using the NIH criteria. Normal laboratory values were determined according to our lab reference and the US NHANES III. SF levels (mcg/Lt) were defined as deficient <4, normal ≥4.0, and excess ≥20. B12 levels (ng/L) as deficient <150, borderline 150-400, normal >400-900, and excess ≥900. Iron def was determined by ferritin levels (mcg/L) as low <24, normal 24-336, elevated >336 for men, low <11, normal 11-307, elevated >307 for women. Area-Level SES indicators: Median Household income (MHI), unemployment rate (UR), median gross rent month (MGRM), % uninsured, median house value (MHV), % high school; were geocoded by zip code using the 2014 American Community Survey. Demographics and clinical variables were compared between groups by chi-square test for frequency data or Kruskal Wallis rank-sum test for continuous variables. Results: 202,046 samples from 128,084 patients were analyzed. In the sample-level analysis, there were statistically significant associations between SES and SF def; all SES indicators except UR for B12 def; and no differences for iron def, except % uninsured (Table 1). There was no statistically significant interaction between race and SES for SF def and iron def. Race was a statistically significant modifier between B12 def and MHI (p<0.001), % uninsured (p=0.002), and MHV (p=0.007). Asian and Other race had an increase in odds of B12 def with increasing MHI (Asian OR=1.11 , Other OR=1.18); white race had a decrease in odds of B12 def with increasing MHI (OR=0.95 for a $10,000 increase in MHI). Conclusions: We show significant relationships between SES and NA in the US. Differences were observed between SF def and all the SES indicators without race interactions. There were significant interactions between B12 def, race and SES for pts of White, Asian and Other race. There were no differences between SES and race for iron def. These relationships confirm that NA are related to area-level SES and other social determinants of health. Research regarding the causes of these disparities on a population level are needed. Disclosures No relevant conflicts of interest to declare.

Über den Vitamin B12-Gehalt und den Vitamin E-Gehalt der einzelligen Grünalge Scenedesmus obliquus

1958 ◽  
Vol 13 (9) ◽  
pp. 605-610 ◽  
Author(s):  
Hermann Fink ◽  
Elisabeth Herold ◽  
Harry Lundin
Keyword(s):  
Vitamin E ◽  
Vitamin B12 ◽  
Scenedesmus Obliquus ◽  
Vitamin B

In neun Proben der einzelligen Zuchtalge Scenedesmus obliquus, geerntet aus nicht-sterilen Freilandkulturen, wurden Gehalte von Vitamin B12 von 0,02 —1,7 γ/g Trockensubstanz festgestellt. Diese lagen somit wenigstens zwanzig- bis fünfzigmal höher als die von Grünblatt höherer Pflanzen, in denen bisher höchstens Spuren von Vitamin B12 gefunden wurden.Mit den in fünf Chargen gefundenen Werten an Vitamin E von 111—183 γ/g Trockensubstanz entsprach unsere Alge Scenedesmus obliquus etwa Spinat und Weizenkeimlingen, also Pflanzenprodukten mit einem überdurchschnittlichen Gehalt an Vitamin E. Weit überlegen ist sie in dieser Hinsicht tierischen Produkten, z. B. der Milch.Da wir in früheren Studien auch einen sehr hohen biologischen Eiweißwert für das Wachstum der Ratte fanden, muß die Zuchtalge Scenedesmus obliquus, jedenfalls in getrocknetem Zustand, als ein neues interessantes Material von sehr hohem diätetischem Wert angesehen werden, das in seinem ernährungsphysiologischen Verhalten günstige Eigenschaften von tierischen und pflanzlichen Produkten in sich vereinigt.Es ergaben sich keine Anhaltspunkte dafür, den hohen biologischen Wert für das Wachstum nicht in erster Linie dem (verdaulichen) Eiweiß selbst zuzuschreiben und nicht dem Vitamin B12 und Vitamin E der Scenedesmus-Alge.

Cannabis sativa-derived carbon dots co-doped with N–S: highly efficient nanosensors for temperature and vitamin B12

2019 ◽  
Vol 43 (43) ◽  
pp. 17058-17068 ◽  
Author(s):  
Pranav Tiwari ◽  
Navpreet Kaur ◽  
Vinay Sharma ◽  
Hyeonggon Kang ◽  
Jamal Uddin ◽  
...  
Keyword(s):  
Vitamin B12 ◽  
Carbon Dots ◽  
Cannabis Sativa ◽  
Vitamin B ◽  
Highly Efficient ◽  
Co Doped

Cannabis sativa-derived carbon dots as efficient nanosensors for temperature and vitamin B12.

Total synthesis of vitamin B12 — a fellowship of the ring

2016 ◽  
Vol 20 (01n04) ◽  
pp. 1-20 ◽  
Author(s):  
G. Wayne Craig
Keyword(s):  
Total Synthesis ◽  
Vitamin B12 ◽  
Cyclic Ether ◽  
Vitamin B ◽  
Porphyrin Molecule ◽  
Cobyric Acid

In the synthesis of cobyric acid following an arduous 60-step synthesis of the tetrapyrrole corrigenolide, Woodward demonstrated that ring cyclization yielded unexpectedly the corrin cyclic ether (Fig. 2). Its structure was chosen as the chemistry logo for the 1970 IUPAC meeting. It was a reminder that chemistry can be capricious and beautiful. This article is a tribute to the 50-year career in porphyrins of Professor Kevin M. Smith and describes his early contributions with colleagues in the synthetic quest of a related porphyrin molecule, vitamin B12 (Fig. 1a).

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