Acid Analysis Research Articles

Assessment of acid catalytic properties of ferrosilicate MFI zeolite by methanol-to-hydrocarbon conversion.

Four representative synthetic methods were employed to prepare Fe-containing siliceous MFI zeolites. The obtained Fe-MFI zeolites exhibited markedly different catalytic performances in the methanol-to-hydrocarbon (MTH) conversion reaction depending on the type of Fe incorporation within the siliceous framework. The catalytically active Brønsted acid sites were analyzed using pyridine adsorption experiments combined with Fourier transform infrared spectroscopy, providing characteristic signal intensities according to the acid-base interactions. Based on the MTH conversion results and acidity analyses, a suitable synthetic method was identified for the incorporation of Fe within the MFI zeolite framework. However, compared to other catalytic reactions, structural analyses by transmission electron microscopy, ultraviolet-visible spectroscopy, and X-ray absorption spectroscopy were much less conclusive.

Influence of Kluyveromyces lactis and Enterococcus faecalis on Obtaining Lactic Acid by Cheese Whey Fermentation

Cheese whey is a byproduct of the cheese industry that causes high levels of pollution in the environment, but its high lactose content means that it can be used as a source to obtain lactic acid. In this study, two strains, one belonging to a yeast and the other one to a bacteria (Kluyveromyces lactis and Enterococcus faecalis), were isolated from cheese whey and molecularly characterized, and the optimal growth conditions were determined. Then, using proteinized and deproteinized cheese whey, batch fermentation was carried out with the strains arranged in suspension and immobilized. The consumption of lactose and the production of lactic acid were measured through Brix degrees and acidity analysis. Afterwards, the lactic acid was purified, and its yield and physical and chemical characteristics were determined. It was proven that there were differences between each of the strains; arranged in free or encapsulated cells, the proteinized and deproteinized cheese wheys, under the same purification conditions, achieved different yields, colors, and densities of lactic acid. Immobilized Enterococcus faecalis had the highest yield (50.61 ± 34.94 g/L) using the deproteinized cheese whey compared to the immobilized Kluyveromyces lactis (35.70 ± 0.15 g/L) using the proteinized cheese whey.

Synthesis, Characterization, Molecular Docking Studies and Biological Evaluation of Some Novel 3,5-disubstituted-1-phenyl-4,5-dihydro-1H-pyrazole Derivatives

Abstract: In this study, some new pyrazoline derivatives bearing cyano or nitro groups were synthesized. The structures of the compounds were characterized by IR, 1H-NMR, 13C-NMR and elemental analysis data. The ABTS·+, DPPH·, CUPRAC and β-Carotene/linoleic acid assays were carried out to determine the antioxidant activity of the synthesized pyrazolines. Compound P14 showed higher antioxidant activity than the standard substance BHA with IC50 values of 1.71±0.31 μM and 0.29±0.04 μM in ABTS+ and β-carotene/linoleic acid assays, respectively. Compound P12 also exhibited higher antioxidant activities than BHA with an IC50 value of 0.36±0.14 μM in β-carotene/linoleic acid analysis. In activity studies of pyrazolines against cholinesterase (AChE and BChE), tyrosinase, α-amylase and α- glucosidase, compound P1 (IC50 = 39.51±3.80 μM) showed higher activity against α-amylase and compounds P5 and P12 displayed higher activity against α-glucosidase than acarbose with IC50 values of 14.09±0.62 and 83.26±2.57 μM, respectively. The drug-like properties such as Lipinski and Veber, bioavailability and toxicity risks of the synthesized compounds were also evaluated. The compounds were predicted to be compatible with Lipinski and Veber rules, have high bioavailability and low toxicity profiles. Moreover, molecular docking studies were performed to better understand the high activity of the compounds against a-amylase and a-glucosidase enzymes.

Abstract B109: Reinforcing risk prediction for intraductal papillary mucinous neoplasms of the pancreas with AI-optimized nucleotide-to-amino acid analyses

Abstract Intraductal papillary mucinous neoplasms (IPMNs) often precede invasive pancreatic ductal adenocarcinoma, with each IPMN tumor carrying a 10-25% risk of progressing to cancer within 10 years of detection. The objective of this work is to employ AI-augmented analyses of single mutations occurring at specific tri-nucleotide sequences or codons and identify markers associated with the progression of cysts to pancreatic cancer. Despite being precursors of pancreatic cancer there is a lack of validated intervention targets for precision prevention for IPMNs. Currently cancer prevention for patients with IPMN is centered on surgery using a risk-tailored approach; the clinical ability to stratify risk of cancer progression of individual IPMN tumors is poor and essentially no effective non-surgical interventions exist. To advance the precision cancer prevention for IPMNs we develop an intelligent, machine learning (ML) derived framework addressing the challenge of IPMN stratification from samples with limited data space, e.g., somatic mutations. Our study incorporates the text-based statistical and ML analyses of the mutational profiles of patients’ genomes followed by an integration of codon sequence derived mutational features for biomarkers validation. Given the potential of genome spatial organization to understand mutagenesis and genomic instability, we also map the DNA sequence information onto the local spatial genome organization to elucidate intrinsic features and molecular mechanisms that potentially lead to mutations. Results of this study show that information extracted from mutational profiles with the proposed methods significantly improves performance of the ML models in stratification of IPMNs and biomarker identification. We also present how utilization of these ML tools for mutational data, spatial genome organization, and functional analyses from tumor samples, can aid understanding of the underlying mechanisms of mutations in IPMNs and pancreatic cancer. Citation Format: Nam Nguyen, Jamie K. Teer, Margaret A. Park, Patricia McDonald, Jason B. Fleming, Jennifer B. Permuth, Kwang-Cheng Chen, Aleksandra Karolak. Reinforcing risk prediction for intraductal papillary mucinous neoplasms of the pancreas with AI-optimized nucleotide-to-amino acid analyses [abstract]. In: Proceedings of the AACR Special Conference in Cancer Research: Pancreatic Cancer; 2023 Sep 27-30; Boston, Massachusetts. Philadelphia (PA): AACR; Cancer Res 2024;84(2 Suppl):Abstract nr B109.

Highly sensitive voltammetric sensor comprising CuSn(OH)6–multi-walled carbon nanotubes–β-cyclodextrin composites and poly(L-arginine) for indole-3-lactic acid analyses in alcohol use disorder serum samples

A highly sensitive voltammetric sensing platform configured via the drop-casting of composites of CuSn(OH)6–multi-walled carbon nanotubes–β-cyclodextrin (CuSn(OH)6–MWCNT–βCD) on an arginine-electropolymerized screen-printed carbon electrode (CuSn(OH)6–MWCNT–βCD/p-Arg/SPCE) was demonstrated to determine the concentrations of indole-3-lactic acid (ILA) in buffer and serum solutions. Prior to the analysis, the successful assembly of the composites and polymer layers was confirmed using field emission scanning electron microscopy, atomic force microscopy, and X-ray photoelectron spectroscopy. The changes in the current due to the direct oxidation of ILA on the modified electrode were used to quantify the ILA. A dynamic range of 0.05–20 μM with a limit of detection of 9 nM for ILA under optimal conditions was achieved primarily with the combined use of CuSn(OH)6, MWCNT, and βCD, resulting in a large electrochemical active surface area (0.185 cm2), low charge transfer resistance (∼2 Ω), and fast electron transfer. Furthermore, the sensing performance, including selectivity, sensitivity, reproducibility, repeatability, and stability, for ILA detection was evaluated. Finally, the ILA concentrations in the pooled clinical serum samples of healthy control and alcohol use disorder patients were measured using our method, the results of which exhibited a notable resemblance to those obtained using liquid chromatography with tandem mass spectrometry.

A New Acidity-Based Approach for Estimating Total Dissolved Solids in Acidic Mining Influenced Water

In natural waters, total dissolved solids (TDS) are usually estimated from electrical conductivity (EC) by applying a conversion factor (f). However, defining this conversion factor for mining influenced water is more complex since this type of water is highly mineralized and has complex chemical matrices. So, the present work aimed to establish a new conversion factor to estimate TDS from the classic parameters usually analyzed for the hydrochemical characterization of these contaminated waters. A total of 121 mining influenced water samples were collected in three mining areas representing pollution scenarios, such as acidic streams, acidic lagoons, and pit lakes. The parameters analyzed were pH, EC, sulfate, acidity, and TDS. The statistical analysis showed that TDS and acidity are related, with a high and significant correlation (r ≥ 0.964, ρ < 0.001), suggesting that this parameter could be an appropriate indicator to estimate the TDS. Moreover, although acidity analysis also involves laboratory work, the time and effort required are considerably less than the gravimetric determination of TDS. Hierarchical cluster analysis applied to these samples allowed the definition of seven classes, and their specific fmedian was calculated employing TDS/Acidity. Then, seven conversion factors were obtained for mining influenced water based on sulfate concentration and acidity degree.

Improved Physiochemical and Sensory Properties of Soft Cheese via Incorporation of Wheat (TriticumVulgare) Germ

In the current study, the utilization of wheat(Triticum Vulgare)germ incorporated with soft cheese was investigated. The antimicrobial efficiency of the wheat germ was examined against a few pathogenic bacteria such as Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Streptococcus sp. The results presented that, there was an occurrence of inhibitory activity by Streptococcus sp. (25 mm, 30mm, and 32 mm) and Staphylococcus aureus (30-35 mm) when treated with wheat germ as the concentration (25%, 50%, and 100%) tested was increased, respectively. The physicochemical properties of the fortified soft cheese treatments [0% (T1), 0.5% (T2) and 1.5% (T3) at (10 ± 2) °C for 0, 7, 14 and 21 days, respectively, such as acidity analysis, pH value, and the moisture content, fat content, protein content, and ash contentwere also studied. The sensory properties indicate that the fortified soft cheese at 0.5% and 1.5%wheat germ were better accepted in comparison with other treatments. Thus, this study has shown that the incorporation of wheat germ into soft cheese could enhance sensory properties such as color, flavor, and palatability, respectively. Hence, the utilization of wheat germ is the potential to improve the texture, functional and nutritional properties of soft cheese.

Effect of Acid Treatment on the Opening of Catalyst Pores

Research on the effect of acid treatment on the opening of the pore mouths on the surface of the zeolite catalyst has been carried out. The preparation of the zeolite catalyst was carried out through the processes of soaking, calcination, oxidation and reduction. Initially, the zeolite was soaked for 3 hours in distilled water, then drained and crushed until its size passed a 100 mesh sieve, followed by a calcination process with nitrogen for 5 hours. Then proceed with oxidation for 3 hours followed by a reduction process for 2 hours with hydrogen. Furthermore, the catalyst was impregnated with Ni from the salt {Ni.NO3.6(H2O)} After that the catalyst is stored and placed in a desiccator. Then an analysis of the catalyst obtained with AAS was carried out to determine the content of Na, Ca, Fe, Mg and K cations, and the content of Al and Si. Then continued with the analysis of acidity with gravimetric method and continued with analysis with the BET method to determine the specific surface area and pore size distribution. Furthermore, the catalyst is used in the catalytic cracking process at various temperatures

Potential of Fatty Acid Methyl Ester as Diesel Blends Produced from Free Fatty Acid in Waste Cooking Oil Catalyzed by Montmorillonite-Sulfonated Carbon

This research, biodiesel production from waste cooking oil (WCO), was conducted using a montmorillonite-sulfonated carbon catalyst from molasses. The biodiesel product would be blended with diesel fuel with various volume variations to see its fuel properties. The catalyst was assessed by Fourier-transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), N2 adsorption-desorption isotherm, and acidity analysis using the titration method. The effect of the weight ratio of montmorillonite to sulfonated carbon was also evaluated. The process of esterification reaction was optimized using the response surface methodology with a central composite design (RSM-CCD). The study showed that the weight ratio of montmorillonite to sulfonated carbon of 1:3 generated the highest acidity of 9.79 mmol/g with a prominent enhanced surface area and was further employed to optimize the esterification reaction. The optimum condition was obtained at a reaction temperature of 78.12°C, catalyst weight of 2.98 g, and reaction time of 118.27 with an FFA conversion of 74.101%. The optimum condition for the mixture of FAME and diesel fuel was achieved at the composition of the B20 blend, which met the FAME standard. The reusability study revealed that the catalyst had adequate stability at three consecutive runs, with a reduced performance was 18.60%. The reduction of FFA conversion was due to the leaching of the catalyst’s active site. This study disclosed that the FAME generated from the esterification of FFA on WCO-catalyzed montmorillonite-sulfonated carbon had a promising option as biodiesel blends for increasing the quality of commercial diesel.

Effect of Acid Treatment on the Opening of Catalyst Pores

Research on the effect of acid treatment on the opening of the pore mouths on the surface of the zeolite catalyst has been carried out. The preparation of the zeolite catalyst was carried out through the processes of soaking, calcination, oxidation and reduction. Initially, the zeolite was soaked for 3 hours in distilled water, then drained and crushed until its size passed a 100 mesh sieve, followed by a calcination process with nitrogen for 5 hours. Then proceed with oxidation for 3 hours followed by a reduction process for 2 hours with hydrogen. Furthermore, the catalyst was impregnated with Ni from the salt Ni.(NO3).6H2O After that the catalyst is stored and placed in a desiccator. Then an analysis of the catalyst obtained with AAS was carried out to determine the content of Na, Ca, Fe, Mg and K cations, and the content of Al and Si. Then continued with the analysis of acidity with gravimetric method and continued with analysis with the BET method to determine the specific surface area and pore size distribution. Furthermore, the catalyst is used in the catalytic cracking process at various temperatures.

Investigations on color and flavor formed by roasting sesame polysaccharide-protein mixtures

Roasting is an important operation to produce attractive colors and distinctive flavors during the production of sesame oil. To investigate the contributions of macromolecules to the color and flavor during roasting sesame seeds, water-soluble polysaccharides (WSP) and chelator-soluble polysaccharides (CSP) sequentially extracted from sesame hull were mixed with sesame protein isolate (SPI) at different ratios (1:1, 1:2, and 2:1, w/w), then the mixtures were roasted at 180 °C for 35 min. Results showed that WSP, CSP, and SPI degraded approximately at 150 °C and SPI had the highest thermal stability. According to monosaccharide/amino acid analysis, glucose and galacturonic acid showed the highest reduction rates, as well as lysine and arginine. CSP + SPI mixtures showed greater reactivity than WSP + SPI mixtures, resulting in a darker color and many more Maillard reaction products. The predominant volatiles of roasted WSP/CSP + SPI mixtures were aldehydes and heterocyclic compounds identified by headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry (HS-SPME/GC–MS). This work provides some new information about flavor and color development during roasting sesame seeds.

Synthesis of heterocycles compounds from condensation of limonene with aldehydes using heteropolyacids supported on metal oxides

In this contribution, heterogeneous materials based on heteropolyacids (HPA, H3PW12040 hydrate) supported over several metal oxides (TiO2, SiO2, SBA-15, Al2O3) were prepared using wetness impregnation, characterized by XRD, FTIR, SEM, acidity by TPD, nitrogen physisorption, RAMAN spectroscopy, 31P NMR and then evaluated in the catalytic condensation of limonene with benzaldehyde. After incorporation of HPA over each support, no structural changes were observed as it was suggest by FTIR, RAMAN and XRD. Acidity analysis by TPD-NH3 showed that increasing the HPA amount increases the acidity of the catalyst until it is constant (20–30%). HPA over alumina, silica and SBA-15 also showed high values of acidity but less than typical HPA/P25 catalyst (HPA over commercial Degussa P25). This last was one of the most selective materials (surface area of 39 m2/g and acidity of 187 µmol NH3. gcat−1) for the synthesis of 3-oxabyciclo[3.3.1]nonane (up to 80%) with a low selectivity to the limonene isomers by-products. The use of water as a solvent decreased considerably the catalytic activity. The same observation was found when the volume of the solvent increased to 30 mL. Besides, catalytic condensation can be performed at free solvent conditions and at room temperature; however, when decrease temperature, a higher number of isomers was observed rather than the desired product. In addition, catalytic condensation was also evaluated in biomass of essential oils and mixtures with sesquiterpenes showing good to excellent results. Typical LHHW mechanism was evident after kinetic analysis. HPA/P25 was shown to be a robust material since can be reused up to two times with a possible decrease in its catalytic activity.

Spatial and Temporal Changes of Soil Microbial Communities in Field Tomato Production as Affected by Anaerobic Soil Disinfestation

Anaerobic soil disinfestation (ASD) has been demonstrated as an effective alternative to pre-plant chemical soil fumigation (CSF) commonly used to control soilborne pathogens. However, the ASD effects on spatial and temporal changes in soil microbial communities remain poorly understood in production systems with low soilborne disease pressure. The objective of this study was to assess the influence of ASD treatments on soil microbial community composition at different soil depths during the spring tomato production season in Florida. Soil treatments included ASD using 6.9 m3 ha−1 of molasses with 11 Mg ha−1 of composted poultry litter (CPL) (ASD0.5), ASD with 13.9 m3 ha−1 of molasses and 22 Mg ha−1 CPL (ASD1.0), and chemical soil fumigation (CSF) using a mixture of 1,3-dichloropropene and chloropicrin. Soil microbial community composition was measured at soil depths of 0–15 and 15–30 cm using phospholipid fatty acid (PLFA) analysis at 0, 36, 76, and 99 days after transplanting (DAT). Fatty acid methyl esters were categorized into biomarker groups including total microbial biomass (TMB), G+ bacteria (G+), G− bacteria (G−), actinomycetes (Actino), arbuscular mycorrhizal fungi (AMF), protozoa, and general fungi (F). Soil concentrations of G+, Actino, F, AMF, and the ratio of F:bacteria (B) were significantly impacted by a soil treatment × soil depth × sampling time three-way interaction. All the microbial biomarkers were significantly affected by soil treatment × sampling depth two-way interactions except for protozoa and F:B ratio. Concentrations of TMB, Actino, AMF, F, G+, and G− bacteria were significantly increased in ASD treated soils at both 0–15 and 15–30 cm soil depths across different sampling times compared with CSF. In addition, the concentrations of G+ and G− bacteria, AMF, F, and TMB were higher at 0–15 vs. 15–30 cm soil depth under ASD treatments, whereas no soil depth differences were observed in CSF. Discriminant analysis further confirmed that soil microbial community composition was distinctly different in CSF compared with ASD treatments. The soil microbial profile was well-differentiated between the two soil depths under ASD treatments but not in CSF, while the enhancement of PLFA biomarkers by ASD decreased with increasing soil depth.

An expedient ion chromatography based method for high-throughput analysis of phytic acid in groundnut kernels.

The online version contains supplementary material available at 10.1007/s13197-022-05527-9.

EFFECT OF PROCESSING METHODS AND STORAGE TIME ON THE CONTENT OF ASCORBIC ACID IN BERRIES

The article presents the results of a study of the dynamics of the content of ascorbic acid in berries of black and red currants and raspberries during storage in a frozen form and during conservation of berries grated with sugar. As objects of research, we used two varieties of red currant, black currant and raspberry. The ascorbic acid content served as a marker of the berry quality during storage. The analysis of ascorbic acid was carried out by the iodometric method according to the standard method. It was found that immediately after freezing, the loss of ascorbic acid is from 6 to 20%, which is significantly less than when grinding with sugar (65–97%). The decrease in the content of ascorbic acid in berries during storage occurs unevenly and after 6 months the concentration stabilizes. When storing frozen berries, additional losses of vitamin C in red and black currants averaged 83%, and in raspberries – 66%. During storage of berry puree, additional losses were 32% for red and black currants, and 89% for raspberries. The best preservation of ascorbic acid was observed when stored frozen – in experiments with black currants, while storing berry puree – in experiments with red currants.

CHARACTERISTICS OF SOME IMPATIENS (BALSAMINACEAE) SPECIES BY THE CONTENT OF FLAVONOIDS AND ASCORBIC ACID

The present study has been conducted in the Moscow region. It is necessary to understand how individual plant organs of invasive species of Impatiens L. (Balsaminaceae) can be promising for further study, with the aim of using them as sources of medicines. Plant material was collected during the flowering time and at the beginning of fruiting (September, 2019–2020): Impatiens glandulifera Royle (Himalayan Balsam) has been studied in 3 populations; I. parviflora DC. (Small Balsam), – also in 3 populations, but I. parviflora (lilac forma) – in one population. We took the native species I. noli-tangere L. (Touch-me-not Balsam), rarely seen in the Moscow region, for comparison. It has been studied in one population. The aim of this study was to determine the content of the sum of flavonoids and ascorbic acid in the vegetative and generative organs in 2 invasive species: I. glandulifera, I. parviflora (including its lilac-flowered form), and in the native species I. noli-tangere. The biochemical analysis of 60 samples of species I. glandulifera и I. parviflora allowed us to determine the level of content of the sum of flavonoids and ascorbic acid in various organs of alien plants widespread in Russia, and to compare them. It has been found for the first time that the maximum amount of flavonoids (up to 3%, in terms of absolutely dry raw materials) in I. parviflora and I. glandulifera is concentrated in flowers, and in smaller amounts it is concentrated in leaves, fruits and stems. The analysis of ascorbic acid has shown that the maximum content of vitamin C is found in flowers: in I. glandulifera - up to 17 mg%; in I. parviflora – up to 15 mg% (in terms of absolutely dry raw materials). The native species I. noli-tangere has no difference from the invasive species Impatiens in the content of the studied biologically active substances in the vegetative organs. The accumulation of secondary metabolites in plant organs has revealed no significant differences between the typical yellow-flowered and lilac-flowered forms of I. parviflora, which serves as an additional confirmation of their taxonomic proximity.

Protective role of glutathione in oxidative stress caused by cadmium and copper

IntroductionCadmium is defined as one of the leading toxic industrial pollutants (Valko i sar., 2005). Although some products containing cadmium can be recycled, much of the pollution with this metal is the result of inadequate disposal and uncontrolled incineration of cadmium-containing waste (Jarup, 2003). Copper particles are released into the atmosphere from copper smelters and ore processing facilities, as well as from anthropogenic sources (use of pesticides, herbicides and fungicides). Oxidative stress occurs due to increased production of reactive oxygen species (Parkinson’s and Alzheimer’s disease) or reduced ability of cells to neutralize it through their internal antioxidants (eg mutation of the superoxide dismutase gene in amyotrophic lateral sclerosis).ObjectivesThe aim of this research was to examine the protective role of supplement, GSH, S-donor ligand, and in conditions of acute and chronic intoxication with sublethal doses of cadmium-II-chloride and copper II sulfate.MethodsAfter medial laparotomy albino rates Wistar soy, a 10% homogenate of brain tissue was made in an appropriate medium and an analysis of acid and alkaline DNase activity was performed (Kocić i sar., 2004; Kocić i sar., 1998).ResultsThis experiment demonstrated the beneficial role of GSH supplement that exhibit antioxidant character in preventing and reducing the adverse effects of acute and chronic cadmium and copper intoxication.ConclusionsAntioxidants prevent the formation of oxidative stress in the cell by reducing and stopping DNA damage and degradation, and thus represent potential scavengers of free radicals.DisclosureNo significant relationships.

Physiological strength of lipoic acid in copper intoxication

IntroductionThe average concentration of copper in the air, e.g. in the USA it ranges from 5–20 ng/m3, in soil from 5–70 mg/kg, and the intake of copper from food is 1.0–1.3 mg/days for adults (0.014–0.019 mg/kg/day) (Barceloux, 1999). The effect of lipoic acid is reflected in the intensification of ATP synthesis, participates in the assimilation of lactic acid, activates the enzyme cycle of tricarboxylic acid, stimulates the growth of lactic acid bacteria by replacing acetate (acetate transfer factor), stimulates CoA synthesis (fatty acid utilization), prevents liver damage by various toxins, normalizes aldolase and transferase levels.ObjectivesThe aim of this study is to show the useful role of a supplement, lipoic acid, as an antioxidant in the prevention of oxidative stress.MethodsAll procedures were performed after anesthesia of albino rats with ketal in accordance with the principles of sacrifice in laboratories. After medial laparotomy albino rates Wistar soy, a 10% homogenate of brain tissue was made in an appropriate medium and an analysis of acid and alkaline DNase activity was performed (Kocić i sar., 2004).ResultsDNases are thought to be the main executors of apoptosis, responsible for internucleosomal DNA fragmentation, which is the breakdown of chromosomal DNA into oligonucleosome-sized fragments. Administration of lipoic acid has been shown to protect against oxidative stress caused by copper.ConclusionsBased on the results of this research, it can be concluded that lipoic acid is a powerful and powerful antioxidant.DisclosureNo significant relationships.

Analysis of Microbial Diversity and Amino Acids of Korean-Chungtaejeon and Japanese-Goishicha

Analysis of Microbial Diversity and Amino Acids of Korean-Chungtaejeon and Japanese-Goishicha

Forensic Science in The Nigerian Criminal Justice System

Abstract This research aimed at assessing the application and impact of forensic science in the Nigerian criminal justice system by making reference to certain components of forensics that are relevant to the criminal justice system. Such components include, Deoxyribonucleic Acid (DNA) analysis, Fingerprint analysis, Polygraph test, Ballistics, Forensic anthropology, Forensic pathology and Computer forensics. In the course of this research, it was found that establishing certain types of evidence such as fingerprint impressions and DNA, against accused persons was difficult due to the absence of sophisticated forensic laboratories and this hindered conviction of such persons. In view of this problem, this research recommends for proper training of law enforcement agencies in terms of how crimes and crime scenes are handled and also the establishment of sophisticated forensic labs where evidence and accused persons can be tested in order to determine their guilt or innocence, thereby easing the administration of justice in Nigeria. Keywords: forensic science, Nigerian criminal justice