When it comes to Au NPs, various colloidal syntheses methods have been reported and are covered in numerous reviews . Due to the high redox potential of HAuCl4, a range of syntheses can be performed at room using for instance using food or plant extracts . Strong reducing agents can also be used for room temperature (RT) synthesis such as NaBH4 , and the use of stabilizers is almost systematic . A typical example of stabilizer is sodium citrate in the state-of-the-art Borowskaja-Turkevich-Frens method or thiol-based compounds in the Brust-Schiffrin method . In most cases, the synthesis requires relatively hazardous chemicals and/or high pressure or temperature and/or additives . The additives commonly used are typically derived from fossil fuels, which is not ideal to develop sustainable syntheses. Alternatively, plant and/or food extract can be used as source of reducing agents and/or stabilizers. Unfortunately, these extracts are typically obtained by using various organic solvents for the extraction, which minimizes the possible green aspects of the synthesis . As a result, there are arguably very few truly green SF synthesis of Au NPs performed in water-based solvents . Astruc et al. showed that Au NPs without additives could be obtained using NaBH4 in water but the Au NPs showed poor stability and moderate size control, while requiring a relatively hazardous chemical (NaBH4) . Laser ablation is suitable to obtain small size Au NPs. A possible drawback of this approach is to require quite some knowledge on laser optimization and typically the need for a centrifugation step after synthesis to obtain relatively mono-dispersed NPs . An alternative option reported by Parveen et al. is to use glycerol as reducing agent and stabilizer . However, the inconvenient used of the high viscosity glycerol impairs an optimal processing of the Au NPs as detailed elsewhere .