Microalgal sporopollenin from Chlorella vulgaris cultivated using coal power plant CO2

IF 4.5 2区生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2025-09-02 DOI:10.1016/j.algal.2025.104284

Jirong Long , Wenguang Zhou , Jing Cao , Yuxuan Mao , Peilun Xu , Jin Liu , Yanghong Yao , Chenguang Wang , Yong Liu

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Abstract

Sporopollenin is a chemically robust biopolymer known for its resistance to environmental degradation and diverse functional potential. This study pioneers the successful extraction of sporopollenin from Chlorella vulgaris cultured in coal-fired flue gas using an innovative alkali-acid two-stage protocol. Multiscale characterization revealed that, despite its irregular morphology, microalgal sporopollenin shares high structural similarity with pollen-derived counterparts. Fourier-transform infrared spectroscopy and elemental analysis confirmed similar functional groups and elemental profiles. Liquid chromatography–mass spectrometry and pyrolysis–gas chromatography–mass spectrometry identified fatty acids as the major structural units, while solid-state ¹³C SSNMR spectroscopy revealed a hybrid architecture comprising aliphatic, aromatic, and heterocyclic components. These findings provide molecular insight into the evolutionary continuity of sporopollenin and highlight a scalable, green approach for transforming industrial emissions into high-value biomaterials.

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利用燃煤电厂二氧化碳培养小球藻的微藻孢粉

孢粉素是一种化学坚固的生物聚合物，以其抗环境降解和多种功能潜力而闻名。本研究开创了采用创新的碱-酸两阶段工艺从燃煤烟气中培养的小球藻中成功提取孢子孢粉的先河。多尺度表征表明，尽管微藻孢子花粉形态不规则，但其与花粉衍生的孢子花粉具有高度的结构相似性。傅里叶变换红外光谱和元素分析证实了相似的官能团和元素谱。液相色谱-质谱法和热解-气相色谱-质谱法鉴定其主要结构单元为脂肪酸，而固态13C SSNMR光谱则显示其为混合结构，包括脂肪族、芳香族和杂环成分。这些发现为孢粉素的进化连续性提供了分子视角，并强调了将工业排放转化为高价值生物材料的可扩展的绿色方法。

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来源期刊

Algal Research-Biomass Biofuels and Bioproducts BIOTECHNOLOGY & APPLIED MICROBIOLOGY-

CiteScore

9.40

自引率

7.80%

发文量

332

期刊介绍： Algal Research is an international phycology journal covering all areas of emerging technologies in algae biology, biomass production, cultivation, harvesting, extraction, bioproducts, biorefinery, engineering, and econometrics. Algae is defined to include cyanobacteria, microalgae, and protists and symbionts of interest in biotechnology. The journal publishes original research and reviews for the following scope: algal biology, including but not exclusive to: phylogeny, biodiversity, molecular traits, metabolic regulation, and genetic engineering, algal cultivation, e.g. phototrophic systems, heterotrophic systems, and mixotrophic systems, algal harvesting and extraction systems, biotechnology to convert algal biomass and components into biofuels and bioproducts, e.g., nutraceuticals, pharmaceuticals, animal feed, plastics, etc. algal products and their economic assessment