Progress in Chemical and Biochemical Research

Original Research Article

Comparative Assessment of Phytochemicals in Four (4) Varieties of Ananas Comosus (l.) Merr Peels

Tarhemba Terwanger Philip; Kaana Asemave; G.O Obochi

Volume 4, Issue 1 , January 2021, Pages 1-10

https://doi.org/10.22034/pcbr.2020.240534.1111

Abstract

The paper reports comparative assessment of some phytochemicals in four (4) varieties of pineapple (Ananas comosus (L.) merr) peels / rinds. These varieties were Native Pineapple (A), ... Read More The paper reports comparative assessment of some phytochemicals in four (4) varieties of pineapple (Ananas comosus (L.) merr) peels / rinds. These varieties were Native Pineapple (A), Queens Pineapple (B), MD-2 Pineapple (C), and Smooth Cayene pineapple (D). The pineapples were collected, properly washed, and the peels were processed. After that, the peels were pulverized and oven-dried at 50 OC for 48 h. Chefman 500 W Blender was used to blend these dry samples into 0.5 µm sizes. The resulting peels were used for the analyses of alkaloid, tannin, phytate, oxalate, flavonoid, cardiac glycoside, total phenolic, and βeta- carotene using standard reported procedures. The results implied higher levels of flavonoid and total phenol in the varieties C and D than for the varieties A and B. The levels of β-carotene and cardiac glycoside were found to be significantly different (p <0.05) amongst the different peels. However, it was observed that there was no significant difference (p <0.05) in tannin and phytate contents of these rinds. There was also no significant difference in the oxalate contents of varieties A and B; but difference in the oxalate levels of varieties C and D was significant (p <0.05). Like the varieties A and B, the difference in alkaloids content of varieties C and D was not significant (p <0.05). These peels can be blended into our diets because of the presence of these phytochemicalsThe paper reports comparative assessment of some phytochemicals in four (4) varieties of pineapple (Ananas comosus (L.) merr) peels / rinds. These varieties were Native Pineapple (A), Queens Pineapple (B), MD-2 Pineapple (C), and Smooth Cayene pineapple (D). The pineapples were collected, properly washed, and the peels were processed. After that, the peels were pulverized and oven-dried at 50 OC for 48 h. Chefman 500 W Blender was used to blend these dry samples into 0.5 µm sizes. The resulting peels were used for the analyses of alkaloid, tannin, phytate, oxalate, flavonoid, cardiac glycoside, total phenolic, and βeta- carotene using standard reported procedures. The results implied higher levels of flavonoid and total phenol in the varieties C and D than for the varieties A and B. The levels of β-carotene and cardiac glycoside were found to be significantly different (p <0.05) amongst the different peels. However, it was observed that there was no significant difference (p <0.05) in tannin and phytate contents of these rinds. There was also no significant difference in the oxalate contents of varieties A and B; but difference in the oxalate levels of varieties C and D was significant (p <0.05). Like the varieties A and B, the difference in alkaloids content of varieties C and D was not significant (p <0.05). These peels can be blended into our diets because of the presence of these phytochemicals.

Original Research Article

Investigating the Feasibility of Removing Nitrogen and Phosphorus from Gray Water in Effluent Treatment to Reuse Water

Mahdieh Asgari Bajgirani

Volume 4, Issue 1 , January 2021, Pages 11-19

https://doi.org/10.22034/pcbr.2021.118035

Abstract

Wastewater is the excess water flow caused by water consumption in various human activities that can contain various physical, chemical and biological pollutants and endanger human ... Read More

Original Research Article

Application of Ziegler-Nata Catalysts in the Synthesis of Polyolefin

Mahdieh Asgari Bajgirani

Volume 4, Issue 1 , January 2021, Pages 20-31

https://doi.org/10.22034/pcbr.2021.118046

Abstract

Discovering Ziegler-Nata catalyst, Karl Ziegler had a great impact on the development of the chemical industry. Since then, important changes have been made in the method of production ... Read More

Original Research Article

Fenton Processes, Adsorption and Nano Filtration in Industrial Wastewater Treatment

Moslem Shahamatpour; Seyed Mostafa Tabatabaee Ghomsheh; Sara Maghsoudi; Shima Azizi

Volume 4, Issue 1 , January 2021, Pages 32-43

https://doi.org/10.22034/pcbr.2021.118152

Abstract

This paper reviews Fenton processes, adsorption and nano filtration processes. Wastewater is one of the substances that has been neglected even in recent years in the country. Industrial ... Read More

Review Article

A review on Bioimaging, Biosensing, and Drug Delivery Systems Based on Graphene Quantum Dots

Abdollah Khosravanian; Ahmad Moslehipour; Hossein Ashrafian

Volume 4, Issue 1 , January 2021, Pages 44-56

https://doi.org/10.22034/pcbr.2020.237134.1102

Abstract

Graphene quantum dots (GQDs), which are the most capable carbon-based nanostructures, play a significant role in biological studies. These nanostructures show significant attributes ... Read More

Original Research Article

One Pot Reductive Synthesis of Benzimidazole Derivatives from 2-Nitro Aniline and Aromatic Aldehydes Using Zn/NaHSO3 in Water Medium

Hridoydip Ranjan Dasgupta; Suvodip Mukherjee; pranab ghosh

Volume 4, Issue 1 , January 2021, Pages 57-67

https://doi.org/10.22034/pcbr.2020.245413.1126

Abstract

Small amount of Zn dust and NaHSO3 was utilized to efficiently synthesize benzimidazole derivatives via one pot reductive cyclocondensation process in water medium at 100oC temperature. ... Read More

Original Research Article

Gossypol as a Natural Insecticide in Cotton Plants against Cotton Thrips and Pink Bollworm

Seham Ismail

Volume 4, Issue 1 , January 2021, Pages 68-79

https://doi.org/10.22034/pcbr.2021.120448

Abstract

Gossypol level plays an important role in self-protection as antibiosis of cotton plants(Gossypium spp.). Thus, it was found necessary to evaluated the level of gossypol in the different ... Read More

Original Research Article

Equilibrium and Thermodynamic Characteristics of the Corrosion Inhibition of Mild Steel Using Sweet Prayer Leaf Extract in Alkaline Medium

Matthew Ayorinde Adebayo; Samson Olayinka Akande; Adebowale Daniel Olorunfemi; Oluwatosin Omoyemi Ajayi; Joshua Iseoluwa Orege; Enobong Felix Daniel

Volume 4, Issue 1 , January 2021, Pages 80-91

https://doi.org/10.22034/pcbr.2021.120449

Abstract

The usage of synthetic-based inhibitors for protection of metals against corrosion is always accompanied by environmental and economic challenges, including a threat to human health. ... Read More

Original Research Article

Professional Commitment in the Relationship between Professional Competence and Job Performance in Oil Industry

Zahra Torabi; Saeid Saeida Ardekani; Seyed Hassan Hatami Nasab

Volume 4, Issue 1 , January 2021, Pages 92-108

https://doi.org/10.22034/pcbr.2021.120813

Abstract

< p>< p>This study examines professional commitment in the relationship between professional competence and job performance in the Iranian oil industry. The main task of ... Read More

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Volume & Issue: Volume 4, Issue 1, January 2021, Pages 1-108

Comparative Assessment of Phytochemicals in Four (4) Varieties of Ananas Comosus (l.) Merr Peels

Abstract

Investigating the Feasibility of Removing Nitrogen and Phosphorus from Gray Water in Effluent Treatment to Reuse Water

Abstract

Application of Ziegler-Nata Catalysts in the Synthesis of Polyolefin

Abstract

Fenton Processes, Adsorption and Nano Filtration in Industrial Wastewater Treatment

Abstract

A review on Bioimaging, Biosensing, and Drug Delivery Systems Based on Graphene Quantum Dots

Abstract

One Pot Reductive Synthesis of Benzimidazole Derivatives from 2-Nitro Aniline and Aromatic Aldehydes Using Zn/NaHSO3 in Water Medium

Abstract

Gossypol as a Natural Insecticide in Cotton Plants against Cotton Thrips and Pink Bollworm

Abstract

Equilibrium and Thermodynamic Characteristics of the Corrosion Inhibition of Mild Steel Using Sweet Prayer Leaf Extract in Alkaline Medium

Abstract

Professional Commitment in the Relationship between Professional Competence and Job Performance in Oil Industry

Abstract