scholarly journals The influence of temperature and nutrient concentrations on growth rate, biomass, Chlorophyll-a, and biochemical compositions of Tetraselmis suecica (Chlorophyta)

2021 ◽  
Vol 880 (1) ◽  
pp. 012014
Author(s):  
A A Sas ◽  
A J Turki ◽  
A Affan ◽  
W A Al-Taisan ◽  
S K Das ◽  
...  
Keyword(s):  
Biochemical Analysis ◽  
Nutrient Concentrations ◽  
Fluorescent Light ◽  
Tetraselmis Suecica ◽  
High Carbohydrate ◽  
Live Feed ◽  
Group A ◽  
Biochemical Compositions ◽  
C 30 ◽  
Two Parameters

Abstract Microalgae have been got high attention due to its potentiality in aquaculture as live feed, and in industries as ingredients for pharmaceutical, cosmetics, and biofuel industries. The objective of this study was to know the optimum culture condition for profuse growth and biochemical composition of Tetraselmis suecica under two parameters: temperature (20°C, 25°C, and 30°C) and modified F/2 medium nutrients concentrations. Culture of group “A” 20°C was categorized as A1 (F/2 stock solution-A; 0.50 ml. L-1 and F/2 stock solution-B; 0.20 ml. L-1), A2 (F/2 stock solution-A; 1. 00 ml L-1 and F/2 stock solution-B; 0.40 ml. L-1) and A3 (F/2 stock solution-A;1.50 ml. L-1 and F/2 stock solution-B; 0.60 ml. L-1). Cultures in 25°C and 30°C were also categorized as groups “B” 25° C (B1, B2, and B3) and “C” 30°C (C1, C2, and C3), respectively. The culture was done for 2 weeks with L:D cycle of 12:12 by using fluorescent light. The highest biomass production was 0.80, 0.64, and 0.45 gL-1 in C2, B3, and A3, respectively. Biochemical analysis showed that protein; 21.92, 20.83, and 18.68 %, lipid; 10.76, 9.42, and 11.71 %, carbohydrate; 38.51, 37.78, and 41.49 %, ash; 15.89, 15.61, and 13.7 %, and moisture; 14.26, 15.02, and 14.42 % in biomass grown of “A”, “B” and “C” culture group, respectively. From the study, it could be said that T. suecic is a eurythermal and mesotrophic habitant microalga which produce high protein and high carbohydrate in low and high temperature, respectively.

scholarly journals Temporal and Spatial Variations of the Biochemical Composition of Phytoplankton and Potential Food Material (FM) in Jaran Bay, South Korea

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3093
Author(s):  
Jae Hyung Lee ◽  
Won-Chan Lee ◽  
Hyung Chul Kim ◽  
Naeun Jo ◽  
Kwanwoo Kim ◽  
...  
Keyword(s):  
South Korea ◽  
Food Source ◽  
Coastal Region ◽  
Controlling Factors ◽  
Spatial Variations ◽  
Nutrient Concentrations ◽  
Food Material ◽  
Biochemical Component ◽  
Phytoplankton Communities ◽  
Biochemical Compositions

Food material (FM) derived from biochemical components (e.g., proteins, lipids, and carbohydrates) of phytoplankton can provide important quantitative and qualitative information of the food available to filter-feeding animals. The main objective of this study was to observe the seasonal and spatial variations of the biochemical compositions of phytoplankton and to identify the major controlling factors of FM as a primary food source in Jaran Bay, a large shellfish aquaculture site in South Korea. Based on monthly sampling conducted during 2016, significant monthly variations in the depth-integrated concentrations of major inorganic nutrients and chlorophyll a within the euphotic water column and a predominance (49.9 ± 18.7%) of micro-sized phytoplankton (>20 μm) were observed in Jaran Bay. Carbohydrates were the dominant biochemical component (51.8 ± 8.7%), followed by lipids (27.3 ± 3.8%) and proteins (20.9 ± 7.4%), during the study period. The biochemical compositions and average monthly FM levels (411.7 ± 93.0 mg m−3) in Jaran Bay were not consistent among different bays in the southern coastal region of South Korea, possibly due to differences in controlling factors, such as environmental and biological factors. According to the results from multiple linear regression, the variations in FM could be explained by the relatively large phytoplankton and the P* (PO43− − 1/16 × NO3−) and NH4+ concentrations in Jaran Bay. The macromolecular compositions and FM, as alternatives food source materials, should be monitored in Jaran Bay due to recent changes in nutrient concentrations and phytoplankton communities.

scholarly journals Repair of oxidative DNA base lesions induced by fluorescent light is defective in xeroderma pigmentosum group A cells

1999 ◽  
Vol 27 (15) ◽  
pp. 3153-3158 ◽  
Author(s):  
L. Leonora J. ◽  
N. Hoehr ◽  
S. J. Mazur ◽  
G. L. Dianov ◽  
S. Senturker ◽  
...  
Keyword(s):  
Xeroderma Pigmentosum ◽  
Fluorescent Light ◽  
A Cells ◽  
Dna Base ◽  
Group A ◽  
Xeroderma Pigmentosum Group A

Tetraselmis suecica cultured in different nutrient concentrations varies in nutritional value to Artemia

Aquaculture ◽  
1996 ◽  
Vol 143 (2) ◽  
pp. 197-204 ◽  
Author(s):  
J. Fábregas ◽  
A. Otero ◽  
E. Morales ◽  
B. Cordero ◽  
M. Patiño
Keyword(s):  
Nutritional Value ◽  
Nutrient Concentrations ◽  
Tetraselmis Suecica

scholarly journals Biochemical Evaluation of Silver Nanoparticles in Wistar Rats

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Oluyomi Stephen Adeyemi ◽  
Ifeoluwa Adewumi
Keyword(s):  
Silver Nanoparticles ◽  
Biomedical Applications ◽  
Wistar Rats ◽  
Biochemical Analysis ◽  
Significant Loss ◽  
Male Rats ◽  
Rat Serum ◽  
Show Evidence ◽  
Group A ◽  
Biochemical Evaluation

Background. Silver nanoparticles have found wider and increasing biomedical applications due to their broad antimicrobial characteristics. However, toxicity of nanoparticles is a subject of continued controversy, thus necessitating further studies in this direction. Objectives. This study investigated the biochemical effects of silver nanoparticles in Wistar rats. Materials and Methods. Forty male rats were randomly distributed into eight experimental groups of five. Group A served as the control and received distilled water. Groups B to H were orally exposed to varying concentrations of silver nanoparticles (AgNPs) at 100, 1000, and 5000 mg/kg daily for 7, 14, and 21 days alternately. Following cessation of treatments, rats were sacrificed and the blood and other vital organs were collected and prepared as specimens for biochemical analysis. Results. Administration of AgNPs to rats did not produce significant loss in feed intake and body weight. However, rat exposure to AgNPs caused significant alterations to levels of serum and tissue AST, ALT, and ALP. At the 100 mg/kg AgNPs exposure, rat serum and tissue AST and ALT levels were significantly decreased (P < 0.05). In contrast, AgNPs administration elevated (P < 0.05) ALP levels in rat serum and tissues. Conclusion. We show evidence that AgNPs administration to Wistar rats altered some biochemical parameters.

scholarly journals Treatment of produced water from Niger Delta oil fields using simultaneous mixture of local materials

2020 ◽  
Author(s):  
S. G. Udeagbara ◽  
S. O. Isehunwa ◽  
N. U. Okereke ◽  
I. U. Oguamah
Keyword(s):  
Heavy Metals ◽  
Niger Delta ◽  
Produced Water ◽  
Palm Kernel ◽  
Oil Fields ◽  
Distilled Water ◽  
Treatment Techniques ◽  
Group A ◽  
C 30 ◽  
Group B

Abstract Produced water (PW) from petroleum reservoirs often contains heavy metals and other contaminants that are harmful to the environment. Most of the commonly used treatment techniques have been reported to be ineffective in reducing some of the contaminants’ concentrations to recommended disposal levels. This study evaluated the effectiveness of four selected bio-adsorbents combined for treating PW from Niger Delta oil fields. In this study, orange peels (I), banana peels (II), sponge gourd (Luffa cylindrica) (III) and palm kernel fibers (IV) were washed with distilled water, sun-dried (24 h) and dried in the oven at 105 ± 5 °C (3 h, I and II), 150 °C (30 min, III) and 80 °C (3 h, IV). They were ground into powder, sieved (150 μ, Group A) and (300 μ, Group B), washed with 0.4 mol/L HNO3, filtered and rinsed with distilled water. Samples of PW were obtained from fields R, X, and Y in the Niger Delta and analysed for heavy metals using an atomic absorption spectrophotometer (AAS). Samples were treated in adsorption column over 6 h using the adsorbents simultaneously. Treated samples were analysed with AAS and characterised. Adsorption of heavy metals were assessed using Langmuir and Freundlich models. Data were analysed using regression and other statistical methods. For the 150 μ size of sample R, the percentage reductions for the metal concentrations (Pb, Ni, Cd, Cu, Fe, Mg, Cr, Zn, Mn, Ca, Ar, B, Sn and Ba) were found to be 100%, 52.7%, 100%, 100%, 85.87%, 19.48%, 100%, 92.8%, 17.74%, 98.86%, 22.32%, 29.56%, 78.06% and 44.74%, respectively, while the reduction in 300 μ size were 1.52%, 97.2%, 71.4%, 17.1%, 43.8%, 45.6%, 7.04%, 89.6%, 35.4%, 99.6%, 0.0001%, 1.19%, 14.19% and 0.002%, respectively. The finer adsorbents were more effective. Similar results were obtained for PW samples from the other fields. Produced water from Niger Delta oil fields was effectively treated of contaminants using four selected bio-adsorbents mixed simultaneously.

scholarly journals Growth of the marine microalga Tetraselmis suecica in batch cultures with different salinities and nutrient concentrations

Aquaculture ◽  
1984 ◽  
Vol 42 (3-4) ◽  
pp. 207-215 ◽  
Author(s):  
Jaime Fabregas ◽  
Julio Abalde ◽  
Concepcion Herrero ◽  
Buenaventura Cabezas ◽  
Manuel Veiga
Keyword(s):  
Nutrient Concentrations ◽  
Tetraselmis Suecica ◽  
Batch Cultures ◽  
Marine Microalga

scholarly journals Ameliorative Effect of the Methanol Extract of Napoleonae imperialis Leaves against Methotrexate-induced Renal Damage in Albino Rats

2020 ◽  
pp. 10-20
Author(s):  
O. J. Mba ◽  
G. S. Aloh ◽  
E. N. Uhuo
Keyword(s):  
Normal Control ◽  
Renal Damage ◽  
Biochemical Analysis ◽  
Methanol Extract ◽  
Positive Control ◽  
Control Group ◽  
Albino Rats ◽  
Ameliorative Effect ◽  
Group A ◽  
Group B

Aim: This study was aimed to evaluate the effect of methanol extract of Napoleonae imperialis leaves against methotrexate renal damage in albino rats. Methodology: Thirty (30) male albino rats of mean weight 130 g were used for this study. The animals for the study were grouped into five (5) of six (6) rats each. Group A (normal control) received feed and water only and Group B (positive control) was induced with methotrexate without treatment. Test groups (C and D) were orally given 250 mg and 500 mg/kg b.wt of leaves extract, and group E was orally given the extract only (500 mg/kg b.wt) respectively for 14 days. All the rats used in this study were initially subjected to renal damage using 0.5 ml/kg of methotrexate except the normal control group. The rats were sacrificed after 14 days and the blood samples were collected for biochemical analysis, Results: From the result obtained, there was a significant (p< 0.05) decrease in the groups that received 250 mg/kg and 500 mg/kg b.wt of the plant extract in (Urea, Creatinine and Na+), and a significant increase (p< 0.05) in K+ and Cl-. Also there was a significant (p< 0.05) decrease in (Urea, Creatinine, and Na+) in comparison with the control groups and the group that received the extract only (500 mg/kg b.wt), and a significant increase (p< 0.05) in (K+ and Na+). Conclusion: The study indicates that the methanol extract of Napoleonae imperialis leaves may have exerted renal functioning effects in albino rats, and may also be used pharmacologically in the management of organ toxicity.

scholarly journals Evaluation of Chronic Administration of Metronidazole on the Morphological and Biochemical Parameters on the Cerebral Cortex of Adult Wistar Rats

2021 ◽  
pp. 31-43
Author(s):  
A. J. Ajibade ◽  
I .J. Ayanlade
Keyword(s):  
Cerebral Cortex ◽  
Wistar Rats ◽  
Biochemical Analysis ◽  
The Body ◽  
Degenerative Changes ◽  
Histological Techniques ◽  
Antibiotic Drug ◽  
Body Weights ◽  
Group A ◽  
Group B

Metronidazole has been implicated in diverse neurologic syndromes such as; cerebellar syndrome, encephalopathy, seizures, optic neuropathy, autonomic neuropathy and peripheral neuropathy.  Metronidazole is an antibiotic drug used to treat infections of the reproductive system, gastrointestinal tract, skin, heart, bone joint, lung, blood, nervous system and sexually transmitted diseases (STDs). This study therefore, investigated the effects of metronidazole on the cerebral cortex of adult wistar rats. Thirty-two (32) adult wistar rats of average weight of 180g of both sexes were distributed into four groups of eight (8) animals per group. Group A was the control group while group B, C and D rats were treated with 250 mg/kg, 500 mg/kg and 1000 mg/kg of metronidazole respectively. Metronidazole was administered orally on daily basis to the animals for 28 days. The weights of the rats were taken weekly using a weighing scale. On the 28th day of the treatment, the animals were sacrificed by cervical dislocation. The skulls were excised and the brains were harvested, weighed immediately using a sensitive weighing balance and then fixed in 10% formolcalcium for routine histological techniques and the other parts were processed for biochemical analysis of Malondialdehyde (MDA), Nitric Oxide (NO) and Succinate dehydrogenase (SDH). The results showed that there was a significant increase in the body weights of wistar rats in A and B while the mean body weights of the wistar rats reduced significantly in group C and D. The brain weights in group B and C increased insignificantly while brain weight in group D increased significantly when compared with group A. The biochemical analysis showed significant increase (P<0.05) in the level of MDA, NO and SDH in group B, C and D as compared with group A. Histological study of the cerebral cortex revealed conspicuous degenerative changes in group B while group C and D showed increased degenerative cerebral cortical layers with peripheral and central degenerative changes. The study concluded that metronidazole exhibited a neurodegenerative effect on the cerebral cortex of the wistar rats investigated. It is recommended that other studies should be carried out to corroborate these findings.

scholarly journals A Critical Analysis of Vitamin D and Calcium in Women during Pregnancy

2021 ◽  
Vol 15 (6) ◽  
pp. 1497-1499
Author(s):  
M. Abbas ◽  
S. Azhar ◽  
A. Fawwad ◽  
H. Abbas ◽  
H. Jabeen ◽  
...  
Keyword(s):  
Vitamin D ◽  
Retrospective Study ◽  
Pregnant Women ◽  
Critical Analysis ◽  
Direct Impact ◽  
Group A ◽  
Normal Women ◽  
C 30 ◽  
Group B ◽  
Maternity Home

Aim: To find out the frequency of vitamin D and calcium in pregnant women and their effects on fetus as well as mothers. Study Design: Retrospective study. Place and Duration of Study: Darul Shifa Clinic & Maternity Home Karachi Pakistan from 1st July 2020 to 31st December 2020. Methodology: One hundred and twenty patients with proper evidence of pregnancy were enrolled. All patients from age 18 years to age 35 years with no other disease were included and those women who have some other diseases or age outliers were excluded. Results: There is a significance difference in the vitamin D and calcium during the period of pregnancy. In the group A (18 years to 25 years) the significance difference of vitamin D was (P=0.000) while the calcium was (P=0.200). In the group B (26 years to 30 years) the significance difference of vitamin D was (P=0.000) while the Calcium was (P=0.071) and in the group C (30 years to 35 years) there was no significant change of vitamin D and calcium (P=0.000). The result of group C is different from the results of the above two groups, because in this age majority of the women were living in a congested houses as well as were spending a depressive life due to home problems, husband wife compromise problems, children problems, financial problems etc. and all such problems have a direct impact on their pregnancy Conclusion: It was statistically found that the Vitamin D and calcium values show significances changes during pregnancy in contrast to the normal women. Key words: Vitamin D, Calcium, Pregnant women

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