KAWANISHI-CITY, Japan, July 16,
2024 /PRNewswire/ -- The vision of Green Science
Alliance is to offer actual cutting-edge technology for
sustainable, carbon neutral society. They are also trying to
replace all of the petroleum, fossil fuel-based chemicals with
plant, biomass based chemical products. This time, they
developed quantum dot based anti-bacterial materials from biomass
waste, organic waste such as wood waste, paper waste, food waste,
orange peel waste etc.
Anti-bacterial materials are drugs or medicines used for
bacterial infection. Antibiotics, probiotics, bacteriophages,
anti-peptide, nano-materials are the anti-bacterial materials which
influence the behavior of bacteria. Compared to conventional
anti-bacterial materials which are made by chemical synthesis, or
obtained from microorganisms, nano-materials have tendency to
adhere to bacteria surface stronger than those commercial
anti-bacterial materials. Nano-materials may interact or permeate
into bacterial cell membrane or cell wall stronger, because the
size of nano-materials could be so small as a few nanometers. In
addition, due to the existence of surface chemical groups on
quantum dots, they attach to the bacteria surface stronger. For
these reasons, metal nanoparticles such as copper and silver
nano-particles are known to possess anti-bacterial properties
although this type of products have problems in terms of economical
cost.
Quantum dots are super tiny nano-materials (0.5 - 9 nm) with
optical properties that follow the rules of quantum chemistry and
quantum mechanics. These quantum dots are also called "artificial
atoms or artificial molecules" because each quantum dot comprises
several dozens to thousand number of atoms or molecules. At this
size range, the energy levels of electrons are no longer continuous
and are separated due to the physical phenomenon known as the
quantum confinement effect. Under this condition, the wavelength of
emission light depends on the size of the quantum dot. The Nobel
Prize was awarded to the people who discovered and developed these
quantum dots in 2023.
Green Science Alliance has been developing various types of
quantum dots and quantum dot composites and this time, Dr.
Ryohei Mori has invented quantum dot
based anti-bacterial materials from biomass waste, organic waste
such as wood waste, paper waste, food waste and orange peel waste
etc. Obviously, this kind of quantum dot based anti-bacterial
materials can be cheaper than copper or silver nanoparticles. This
type of biomass and organic based quantum dots are regarded as
carbon quantum dots or organic quantum dots and they also attach to
bacterial cell membrane or cell wall strongly and permeates into
bacterial cell. Then after, they will influence bacteria gene or
cause active oxygen species so that bacterial will be
destroyed.
Some study also explained that carbon quantum dots may inhibit
enzyme activity in bacteria to suppress peptidoglycan production
which eventually destroy bacteria.
Plant based anti-bacteria materials are flavonoids, polyphenol,
alkaloid, catechin, terpenoid, saponin etc. Since carbon quantum
dots are made from plant biomass, they may inherit anti-bacteria
characteristics which originated from these chemicals.
In addition, when they are applied in agricultural industry such
as at the field, excited electron, exciton, active oxygen species
are generated which have anti-bacteria, anti-virus properties just
as photocatalytic effect, under the sun light illumination.
Recently, the emergence of dangerous multidrug resistance
bacteria caused by continuous usage of antibiotics over decades by
human, has become a severe scary problem. There are some reports
that this type of carbon quantum dots could be one of the solutions
to mitigate that severe issue since the bacteria attack mechanism
is different, compared to conventional anti-bacteria drugs.
It should be noted here that this plant, biomass-based carbon
quantum dot is suggested to possess anti-virus as well as
anti-fungus effect although Dr. Ryohei
Mori is planning to confirm those possibilities. It may have
the possibility to replace conventional anti-bacteria, anti-virus
drugs such as alcohol, sodium hypochlorite etc. which were
frequently used for COVID-19.
Green Science Alliance is promoting to apply this plant,
biomass-based quantum dots materials as anti-bacteria, anti-virus,
anti-fungus as well as pesticides, insecticide for agriculture
etc.
Contact:
Ryohei Mori
+81727598501
380298@email4pr.com
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SOURCE Green Science Alliance Co., Ltd.