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. 2019 Dec 18;10(1):11. doi: 10.3390/nano10010011

Table 2.

Nanomaterials synthesized by yeasts and molds.

Microorganism Culture Conditions (Synthesis Time) Nanomaterial Characteristics (Average Size, Morphology, etc.) Biosynthetic Pathway Application Ref.
Saccharomyces cerevisiae Aerobic two days growth in a modified Czapek’s medium, 5 °C; aliquot of cell suspension (OD600 = 0.6) + 3 mM CdCl2 + 0.8 mM Na2TeO3 + 1.5 mM CH3SO3H + 2.6 mM NaBH4, stirred at 500 rpm (N/A) CdTe QDs 2.0–3.6 nm; cubic zinc blende crystals Extracellular synthesis not described Good candidate for bio-imaging and bio-labelling applications [50]
Aspergillus welwitschiae
KY766958
Growth in Czapek’s medium; pH 7.3 ± 0.2, 30 °C for 7 days shaken at 150 rpm + 2 mmol K2TeO3 (48 h) Te NPs 60.80 nm; oval to spherical shape Mechanism not described Antibacterial activity against E. coli and methicillin resistant Staphylococcus aureus (MRSA) [59]
Commercially available instant dry yeast (Angel Yeast Co.—Yichang, China) Sucrose solution (5 g/L) + instant dry yeast (600 mg), 30 °C for 24 h; cells pellet in sterile water (106 cells/mL) + AgNO3 solution + HAuCl4 solution (final concentrations N/A), 30 °C. (24 h) Au–Ag alloy NPs Reduced metallic form (XPS analysis);
large superficial area and desirable conductivity (electrochemical impedance spectroscopy)
Extracellular synthesis not described Electrochemical sensor for paracetamol [51]
Au–Ag alloy NPs 9–25 nm Extracellular synthesis not described Electrochemical sensor for vanillin [52]
Humicola sp. MGYP medium, pH 9, shaken at 200 rpm, 50 °C; harvested mycelial mass + 1 mM AgNO3, shaken at 200 rpm, 50 °C (96 h) Ag NPs 5–25 nm; spherical shape; face centered cubic crystals Extracellular synthesis through a possible involvement of biomolecules secreted by the fungus In vitro cytotoxicity against NIH3T3 mouse embryonic fibroblast cell line and MDA-MB-231 human breast carcinoma cell line [55]
Fusarium oxysporum f. sp. lycopersici 5 days growth, potato dextrose broth, 28 °C; filtered biomass + 1 mM AgNO3, 28 °C, dark condition (120 h) Ag NPs 5 to 13 nm; spherical shape; face centered cubic crystals Extracellular synthesis, possible involvement of a secreted reductase Antibacterial activity against pathogenic bacteria Escherichia coli and Staphylococcus aureus; antitumoral activity against human breast carcinoma cell line MCF-7 [56]
Penicillium brevicompactum KCCM 60390 72 h growth, potato dextrose broth, 30 °C, shaken at 200 rpm; filtered biomass (5 g) in Milli-Q sterile deionized water and agitated, 72 h at 200 rpm, 30 °C; supernatant from filtered biomass + 1 mM HAuCl4, shaken at 200 rpm, dark condition 30 °C (N/A) Au NPs (live cell filtrate) 25–60 nm; spherical shape; 20–80 nm (potato dextrose broth), spherical and triangular and hexagonal shape

(culture supernatant broth) 20 to 50 nm; well dispersed and uniform in shape and size; good stability against aggregation after 3 months
Extracellular synthesis; possible ion trapping on the fungal cells surface via electrostatic interaction; possible involvement of organic reagents used for the microbial cultivations as potential reducing agents Inhibitory effect and cytotoxicity against mouse cancer C2C12 cell lines [58]
Trichoderma harzianum (SKCGW008) 72 h cultured spores in wheat bran broth media, 28 °C shaken at 180 rpm; supernatant + 0.5% (w/v) of low molecular weight chitosan in agitation (30 min) Chitosan NPs 90.8 nm; spherical shape; amorphous structure Extracellular synthesis via enzyme secreted (not identified) Antioxidant activity; bactericidal activity against Staphylococcus aureus and Salmonella enterica; biocompatibility (no cytotoxic effect on murine fibroblast NIH-3T3 cells) [57]
Aspergillus flavus Growth in potato dextrose broth, 28 °C, 115 rpm; harvested fungal biomass + 3 mM ZnSO4, 27 °C, 200 rpm; for ZnS:Gd nanoparticle 0.3 M Gd(NO3)3 (96 h) ZnS and ZnS: Gd NPs Nanocrystalline and a narrow size distribution: 12–24 nm spherical (ZnS): for and 10–18 nm (ZnS:Gd) Extracellular synthesis not described Optical detection of Pb (II), Cd (II), Hg (II), Cu (II), and Ni (II) in water [60]
Aspergillus flavus Growth in potato dextrose broth + 0.5 mM Pb(CH3COO)2 + 6.4 mM Na2S, 30 °C, 115 rpm (120 h) PbS NPs 35–100 nm; cubic crystal Extracellular synthesis not described Optical detection of As (III) in water [61]