Abstract
Microbial keratinase research has been on an upward trajectory due to the robustness and efficiency of the enzyme toward various green technological processes that promote economic development and environmental sustainability. A compendium of research progression and advancement within the domain was achieved through a bibliometric study to understand the trend of research productivity, scientific impacts, authors' involvement, collaboration networks, and the advancement of knowledge gaps for future research endeavours. A three-decade (1990 to 2019) scholarly published articles were retrieved from the web of science database using a combination of terms "keratinas* or keratinolytic proteas* or keratinolytic enzym*", and subsequently analyzed for bibliometric indicators. A collection of 330 peer-reviewed, research, articles were retrieved for the survey period and authored by 1063 researchers with collaboration index of 3.27. Research productivity was most in 2013 with total research output of 28 articles. The top three authors' keywords were keratinase, keratin and protease with a respective frequency of 188, 26 and 22. India, China and Brazil ranked top in terms of keratinase research outputs and total citation with respective article productivity (total citations) of 85 (1533), 57 (826), and 36 (764). This study evaluated the trend of keratinase research outputs, scientific impact, collaboration networks and biotechnology innovations. It has the potentials to influence positively decision making on future research direction, collaborations and development of products for the bio-economy.
Highlights
The global reliance of fossil-based resources lingers on, and the long term sustainability of the non-renewable resources remains a mirage (Abejón 2018)
This study evaluated the trend of keratinase research outputs, scientific impact, collaboration networks and biotechnology innovations
The dynamics of article publication on keratinase research A total of 330 journal articles on keratinase research were retrieved from the web of science (WoS) during the defined period of survey (1990–2019), which were published by 142 sources
Summary
The global reliance of fossil-based resources lingers on, and the long term sustainability of the non-renewable resources remains a mirage (Abejón 2018). The environmental impacts of the products from fossil-based resource have negatively affected the planet earth. The imperative for a reliable alternative motivates for the exploration of highly abundant renewable resources for sustainable products. The potentials locked in carbonoclastic materials account for the desire to valorize waste biomass into high-value products, and that ensures sustainability in economic development (Akinsemolu 2018; Nnolim et al 2020a). The agro and food industry generates lots of solid wastes which may suitably feed into the economy with novel valorization approach.
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