Progress in Chemical and Biochemical Research

Original Research Article

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

Tarhemba Terwanger Philip; Kaana Asemave; G.O Obochi

Articles in Press, Accepted Manuscript, Available Online from 15 October 2020

http://dx.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 phytochemicals 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 phytochemicals.

Original Research Article

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

Mahdieh Asgari Bajgirani

Articles in Press, Accepted Manuscript, Available Online from 16 October 2020

http://dx.doi.org/10.33945/SAMI/pcbr.2020.244927.1124

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

3. Application of Ziegler-Nata Catalysts in the Synthesis of Polyolefin

Mahdieh Asgari Bajgirani

Articles in Press, Accepted Manuscript, Available Online from 16 October 2020

http://dx.doi.org/10.33945/SAMI/pcbr.2020.245251.1125

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

4. Fenton Processes, Adsorption and Nano Filtration in Industrial Wastewater Treatment

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

Articles in Press, Accepted Manuscript, Available Online from 20 October 2020

http://dx.doi.org/10.33945/SAMI/pcbr.2020.246003.1127

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

Progress in Chemical and Biochemical Research

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Volume 3 (2020)

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Volume & Issue: Articles in Press

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

Abstract

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

Abstract

3. Application of Ziegler-Nata Catalysts in the Synthesis of Polyolefin

Abstract

4. Fenton Processes, Adsorption and Nano Filtration in Industrial Wastewater Treatment

Abstract