Biowaste- and nature-derived (nano)materials: Biosynthesis, stability and environmental applications

Ghazaleh, Ashrafi; Nasrollahzadeh, Mahmoud; Jaleh, Babak; Sajjadi, Mohaddeseh; Ghafuri, Hossein

doi:10.1016/j.cis.2022.102599

Cited by 64 publications

(15 citation statements)

References 215 publications

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“…At the end of each cycle, we calculated the relative activity and found that LacZ and Au NP hydrogels retained 69.3 and 59.6% of their initial activity, respectively, after at least four reaction cycles (Figure a,b, right). Note that the loss of catalytic activity after a few cycles is probably due to the bio-/nanocatalyst inactivation during the recycling/reuse process, which has been widely reported for most immobilized catalysts. , Similar to our results, previous studies also showed that the activity of immobilized LacZ and Au NPs would be reduced to around 80% (substrate: ONPG) and 67% (substrate: p -nitrophenol), respectively, after four cycles of reuse. , Nonetheless, our catalytic materials can be easily recovered and reused with relatively high catalytic activities over multiple cycles.…”

Section: Resultsmentioning

confidence: 99%

Plug-and-Play Functionalization of Protein–Polymer Conjugates for Tunable Catalysis Enabled by Genetically Encoded “Click” Chemistry

Liu

et al. 2022

ACS Catal.

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Protein−polymer conjugates have been widely fabricated and used in many areas across biotechnology and medicine. However, their functions and applications are often limited due to the selected and unchangeable proteins and polymers in the conjugates. To address this constraint, here, we design and fabricate protein−polymer conjugates as generic materials that can be postfunctionalized in a plug-and-play means for tunable catalysis. The key idea is to use genetically encoded "click" chemistry (i.e., SpyTag/SpyCatcher) to functionalize premade conjugates with versatile catalytic moieties. This process can protect the function/activity of ligated moieties from exposure to harsh chemical reactions. To enable easy recyclability, the conjugates are encapsulated in hydrogels before the "click" reaction. Using a biocatalyst and a nanocatalyst as models, we demonstrate the success of using two functionalized hydrogels for efficient catalytic reactions. In addition, the two catalysts can be coupled to perform a two-step artificial chemoenzymatic cascade reaction. Notably, the hydrogel-based catalytic materials allow for easy recovery and reuse for multiple cycles. We anticipate that our strategy will help create easy-to-use materials for catalysis and chemical (bio)transformations.

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Section: Resultsmentioning

confidence: 99%

Plug-and-Play Functionalization of Protein–Polymer Conjugates for Tunable Catalysis Enabled by Genetically Encoded “Click” Chemistry

Liu

et al. 2022

ACS Catal.

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“…9 and Table 2). [150][151][152] Recent review reports suggest that different plant biowastes such as banana, kiwi, orange, lemon, pomegranate, mango peels, eggshell membrane, rice husk, and wheat straw can be utilized for generation of metal NPs. 154 Fruit peels contain abundant bioactive compounds including phenols, flavonoids, tannins, carotenoids, anthocyanins and essential oils, with substantial health benefits, anti-bacterial and antioxidant properties, generally discarded as by-products or waste by the fruit processing industry.…”

Section: Biowaste For the Synthesis Of Metal And Metal Oxide Nanopart...mentioning

confidence: 99%

Organic waste valorisation towards circular and sustainable biocomposites

2022

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“…The extraction of resources from waste via green chemistry for the production of materials that have a smaller ecological footprint has witnessed a spiraling interest in recent times. , Biowastes can be processed to cut down land pollution as alternatives to current expensive techniques for a greener tomorrow. − Human hair is a biowaste that is abundantly available worldwide. Traditionally, human hair is either incinerated or dumped as solid waste which causes environmental pollution. , Therefore, innovations in upcycling of hair for the production of high-value materials that benefit the environment as well as the economy should be emphasized.…”

Section: Introductionmentioning

confidence: 99%

“… 1 , 2 Biowastes can be processed to cut down land pollution as alternatives to current expensive techniques for a greener tomorrow. 3 − 7 Human hair is a biowaste that is abundantly available worldwide. Traditionally, human hair is either incinerated or dumped as solid waste which causes environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

One-Pot Extraction of Bioresources from Human Hair via a Zero-Waste Green Route

et al. 2023

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In recent years, the extraction of bioresources from biowaste via green chemistry and their utilization for the production of materials has gained global momentum due to growing awareness of the concepts of sustainability. Herein, we report a benign process using an ionic liquid (IL), 1-butyl-3-methylimidazolium chloride ([BMIM]Cl), for the simultaneous extraction of keratin and melanin from human hair. Chemical characterization, secondary structure studies, and thermal analysis of the regenerated protein were performed thoroughly. Hemolytic potential assays demonstrated hemocompatibility of the keratin, and thus, it can be used in blood-contacting biomaterials such as sealants, catheters, hemostats, tissue engineering scaffolds, and so on. Scanning electron microscopy showed retention of the ellipsoidal morphology of melanin after the extraction procedure. The pigment demonstrated the ability to reduce 2,2-diphenyl-1-picrylhydrazyl indicative of its free-radical scavenging activity. Notably, the IL could be recovered and recycled from the dialysis remains which also exhibited conductivity and can be potentially used for bioelectronics. Altogether, this work investigates an extraction process of biopolymers using green chemistry from abundantly available biowaste for the production of biomaterials and does not produce any noxious waste matter.

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Biowaste- and nature-derived (nano)materials: Biosynthesis, stability and environmental applications

Cited by 64 publications

References 215 publications

Plug-and-Play Functionalization of Protein–Polymer Conjugates for Tunable Catalysis Enabled by Genetically Encoded “Click” Chemistry

Plug-and-Play Functionalization of Protein–Polymer Conjugates for Tunable Catalysis Enabled by Genetically Encoded “Click” Chemistry

Organic waste valorisation towards circular and sustainable biocomposites

One-Pot Extraction of Bioresources from Human Hair via a Zero-Waste Green Route

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