Entrapment of chlorophyll from Chlorella vulgaris and Chlorella protothecoides into microporous silica synthesized by a sol-gel method

被引：1

作者：

Serratos, Iris N. ^{[1
]}

Avila-Paredes, Hugo J. ^{[2
]}

Hernandez-Resendiz, Ileana ^{[3
]}

Santamaria, Abel ^{[4
]}

Bustos-Terrones, Victoria ^{[5
]}

Ruiz Sanchez, Patricia ^{[6
]}

Saucedo-Castaneda, Gerardo ^{[6
]}

Esparza Shulz, Juan Marcos ^{[1
]}

Arrieta, Alma ^{[7
]}

Sosa, Rebeca ^{[8
]}

机构：

[1] Univ Autonoma Metropolitana, Dept Quim, Unidad Iztapalapa, Av San Rafael Atlixco 1861, Mexico City 09340, DF, Mexico

[2] Univ Autonoma Metropolitana, Dept Ingn Proc & Hidraul, Unidad Iztapalapa, Av San Rafael Atlixco 1861, Mexico City 09340, DF, Mexico

[3] Inst Nacl Cardiol, Dept Bioquim, Mexico City, DF, Mexico

[4] Inst Nacl Neurol & Neurocirug, Lab Aminoacidos Excitadores, Mexico City, DF, Mexico

[5] Univ Politecn Estado Morelos, Direct Academ Ingn Tecnol Ambiental, Blvd Cuauhnahuac 556, Jiutepec 62550, Morelos, Mexico

[6] Univ Autonoma Metropolitana, Dept Biotecnol, Unidad Iztapalapa, Av San Rafael Atlixco 186, Mexico City 09340, DF, Mexico

[7] Univ Autonoma Metropolitana, Lab Cent Microscopia Elect, Unidad Iztapalapa, Av San Rafael Atlixco 186, Mexico City 09340, DF, Mexico

[8] Univ Autonoma Metropolitana, Dept Fis, Unidad Iztapalapa, Av San Rafael Atlixco 186, Mexico City 09340, DF, Mexico

来源：

JOURNAL OF PHYSICS COMMUNICATIONS | 2021年 / 5卷 / 10期

关键词：

Chlorella vulgaris; Chlorella protothecoides; covalent bonding; sol-gel method; optical properties; EXTRACTION; MICROALGAE; PIGMENTS;

D O I：

10.1088/2399-6528/ac26df

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This study presents results of the preparation, absorption and emission characterizations of chlorophyll samples extracted from green microalgae, based on the importance of this pigment and its optical properties. In this work, we characterized extracts containing chlorophyll from green microalgae of the genus Chlorella (C. vulgaris and C. protothecoides) via absorption and emission spectroscopies. The present results were compared with those of chlorophyll extracted from grass, previously reported. Microalgal chlorophyll samples were covalently bonded to the pore surface of organo-modified silica xerogels for a major spectroscopic analysis. Our findings indicate that the composition of green microalgal extracts corresponds mainly to chlorophyll a with a minimal amount of beta-carotene. UV-VIS, IR absorption and UV-VIS emission spectra of the samples displayed the typical bands of chlorophyll a, and some other bands ascribed to beta-carotene. Both the obtained absorption and emission spectra identify the algae chlorophyll bands and are unique. An effect of a radiative energy transfer mechanism between the silica matrix and the microalgal chlorophyll was observed as reabsorption bands in the emission spectra, and this effect was more evident in the C. vulgaris sample with respect to C. protothecoides.

引用

页数：10

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