Ascorbate Radical and Ascorbic Acid Level in Human Serum and Age

1983 ◽  
Vol 38 (1) ◽  
pp. 26-30 ◽  
Author(s):  
R. Sasaki ◽  
T. Kurokawa ◽  
S. Tero-kubota
1999 ◽  
Vol 54 (9-10) ◽  
pp. 830-833 ◽  
Author(s):  
Akira Wadano ◽  
Mitsuharu Azeta ◽  
Shin-ichi Itotani ◽  
Ai Kanda ◽  
Toshio Iwaki ◽  
...  

Grafting is an easy way to produce a new seedling, which can tolerate against various stresses. During the acclimation after grafting, however, the seedlings still suffer a severe water stress. It is well known that water stress produces active oxygen to oxidize ascorbic acid. The concentration of ascorbic acid in the leaves was analyzed by HPLC equipped with an electrochemical detector. The column used was SP-120-5-ODS-BP (DAISO, JAPAN) and elution was performed with 0.1 ᴍ phosphate buffer, pH 3.0. After grafting the seedlings were acclimated under a 6-hr light/dark regimen. The content of ascorbic acid increased gradually during 2 days compared with control. The ascorbate peroxidase showed about constant activity, so the increase of ascorbic acid may be due to its requirement to cure the grafting


2013 ◽  
pp. 7-14
Author(s):  
Khursheed Jahan ◽  
Maksuda Parvin ◽  
Abdullah Ibn Mafiz

Background: Nutritional status in relation to selected biochemical parameters and also nutrient intakes in the pre-eclampsia and eclampsia was assessed in 52 patients and compared with that of 52 normal pregnant (NP) women. Serum calcium, ascorbic acid and blood Hb levels in the pre-eclamptic and eclamptic patients were significantly lower than the values of NP women. By unpaired t-test demonstrated in our study, the serum calcium, ascorbic acid and blood Haemoglobin (Hb) level were highly significantly different but not correlated with each other when compared among these groups. However, total statistical analysis revealed that among all the factors studied serum calcium level, ascorbic acid level and blood Hb level have effect on nutritional status of pre-eclampsia and eclampsia.DOI: http://dx.doi.org/10.3329/bjnut.v24i0.14032 Bangladesh J. Nutr. Vol. 24-25 Dec 2011-2012 pp.7-14


1998 ◽  
Vol 8 (6) ◽  
pp. 378-383 ◽  
Author(s):  
Shoichiro Tsugane ◽  
Michael T. Fahey ◽  
Minatsu Kobayashi ◽  
Satoshi Sasaki ◽  
Yoshitaka Tsubono ◽  
...  

1983 ◽  
Vol 96 (1) ◽  
pp. 910-913 ◽  
Author(s):  
B. L. Vaisman ◽  
V. P. Popov ◽  
T. V. Ignat'eva

1940 ◽  
Vol 86 (362) ◽  
pp. 534-537 ◽  
Author(s):  
Donald G. Remp ◽  
S. R. Rosen ◽  
John B. Ziegler ◽  
D. Ewen Cameron

Numerous workers (Plaut, 1935; Altaman, 1937; Monouni, 1937) have reported that the blood and spinal fluid ascorbic acid levels are low in the aged. No adequate explanation of this fact has been given. Wortis (1938) has suggested that, since oral administration increases the ascorbic acid level of the spinal fluid in the aged as in the young, defective absorption probably does not play a significant part. He believes that the lower values in older persons may be due to increased intensity of metabolic processes concerned with the elaboration of ascorbic acid. Friedman, in discussing this contribution, advanced the suggestion that in older persons there may be less need for ascorbic acid because metabolism is slowed.


1940 ◽  
Vol 44 (2) ◽  
pp. 495-499 ◽  
Author(s):  
C. J. Farmer ◽  
A. F. Abt ◽  
H. C. S. Aron

1972 ◽  
Vol 51 (5) ◽  
pp. 1676-1680 ◽  
Author(s):  
Karl E. Nestor ◽  
Sherman P. Touchburn ◽  
Marion Treiber

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