Silvernanoparticles(AgNPs)havebeena

Silvernanoparticles(AgNPs)havebeenappliedtomanycon-
sumer productsbecauseoftheirexcellentproperties,especiallyin
antibacterial activity [1] and bio/chemicaldetection [2–4]. The
applications seemtoincreaseyearafteryearsotheproduction
ratewillbeboostedsoon.However,AgNPssynthesisusuallyin-
volveschemicalreductionreactioninwhichtoxicchemicalsare
used. Therefore,moresustainablemethodshavebeenproposed
which arecalled “green synthesis” in whichtherawmaterialsare
already thereinnature,particularlyinplantextracts.
Previous studieshavereportedthatmanynaturalcompounds
could actasacappingagentaswellasreducingagentinthegreen
synthesis ofAgNPssuchas J. curcascan [5] and Rhodomyrtus to-
mentosa acetone extract(RAE) [6]. Hyaluronan(HA)asareducing
agent andsofttemplateinAgNPssynthesiswasinvestigated [7].
Moreover,Hydroxypropylstarch(HSP)wasusedasareducing
agent andastabilizingagentfortheformationofAgNPs [8].
Naturalrubberlatexfrom Heveabrasiliensis is acolloidalsystem
of cis-1,4-polyisoprenecalledasrubberparticles.Ingeneral,fresh
latexcomposedofabout30wt%dryrubbercontent(DRC)is
commonlypreservedbyaddingammoniaandtheniscentrifuged
toobtainconcentratednaturalrubberlatexwithabout60wt%
DRCasavaluablerawmaterialinrubberindustrytogetherwith
skim naturalrubberlatex(SNRL)withabout5wt%DRCasalow
cost by-productorawasteinsomesmallfactories.
Recently,Guidelli [9] synthesized AgNPsinconcentratedlatex
at 100 °C andreportedthatrubberparticlesactedasadispersing
and/or cappingagent.Inadditiontorubberparticles,somenon-
rubber componentsinlatexincludingprotein,sugarandleft-over
ammonia playedanimportantroleinthesynthesis.Proteincould
act asanaturalsurfactantandammoniacoupledwithsugarin-
volvedinthereductionreactionbyactingasthereducingagents
[9,10].
As aresultofcentrifugation,SNRLcontainsthelargeramount
of non-rubbercomponents,whichplayanimportantroleinthe
synthesis, thanconcentratedone.Onthebasisof5wt%DRC,skim
latexcontainsmostlywaterandapproximately3.25wt%proteins,
0.425 wt%lipid,3.125wt%carbohydrates/sugars(L-quebrachitol,
sucrose,glucose,galacose,fructose,raffinose andtwopentoses)
[11,12].
Previously,ourgroupfoundthatAgNPscouldbesynthesizedin
skim latexat80 °C withamuchhigherrate,i.e.therapidchangeof
suspension color,thaninconcentratedlatexandtheparticlesizes
rangedfrom70–490nminskimlatex,whichwastoolarge [13].
Later,weloweredthereactionrateinskimlatexbyloweringthe

ผลลัพธ์ (อังกฤษ) 2:

Silvernanoparticles (AgNPs) Havebeenappliedtomanycon-
Productsbecauseoftheirexcellentproperties Sumer, especiallyin
Antibacterial Activity [1] and Bio / Chemicaldetection [2-4]. The
Applications Seemtoincreaseyearafteryearsotheproduction
Ratewillbeboostedsoon.However, AgNPssynthesisusuallyin-
Volveschemicalreductionreactioninwhichtoxicchemicalsare
used. Therefore, Moresustainablemethodshavebeenproposed
which Arecalled "Green synthesis" in Whichtherawmaterialsare
already Thereinnature, Particularlyinplantextracts.
Previous Studieshavereportedthatmanynaturalcompounds
could Actasacappingagentaswellasreducingagentinthegreen
synthesis OfAgNPssuchas J. Curcascan [5] and Rhodomyrtus to-
Mentosa Acetone Extract (RAE) [6]. Hyaluronan (HA) Asareducing
Agent AndsofttemplateinAgNPssynthesiswasinvestigated [7].
Moreover, Hydroxypropylstarch (HSP) Wasusedasareducing
Agent AndastabilizingagentfortheformationofAgNPs [8].
Naturalrubberlatexfrom Heveabrasiliensis is Acolloidalsystem
of cis-1,4-Polyisoprenecalledasrubberparticles.Ingeneral, Fresh
Latexcomposedofabout30wt% Dryrubbercontent (DRC) is
Commonlypreservedbyaddingammoniaandtheniscentrifuged
Toobtainconcentratednaturalrubberlatexwithabout60wt%.
DRCasavaluablerawmaterialinrubberindustrytogetherwith
skim Naturalrubberlatex (SNRL) Withabout5wt% DRCasalow
by cost-Productorawasteinsomesmallfactories.
Recently, Guidelli [9] AgNPsinconcentratedlatex synthesized
at 100 ° C Andreportedthatrubberparticlesactedasadispersing
and / or Cappingagent.Inadditiontorubberparticles, Somenon-
Rubber Componentsinlatexincludingprotein, Sugarandleft-over
ammonia Playedanimportantroleinthesynthesis.Proteincould
Act Asanaturalsurfactantandammoniacoupledwithsugarin-
Volvedinthereductionreactionbyactingasthereducingagents.
[9,10].
As Aresultofcentrifugation, SNRLcontainsthelargeramount
of non-Rubbercomponents, Whichplayanimportantroleinthe
synthesis, DRC Thanconcentratedone.Onthebasisof5wt%, skim
Latexcontainsmostlywaterandapproximately3.25wt% Proteins,
WT 0.425% lipid, 3.125wt% carbohydrates / sugars (L-quebrachitol,
sucrose, glucose. , Galacose, fructose, raffinose Andtwopentoses)
[11,12].
Previously, OurgroupfoundthatAgNPscouldbesynthesizedin
skim Latexat80 ° C Withamuchhigherrate, Ietherapidchangeof
suspension Color, Thaninconcentratedlatexandtheparticlesizes
Rangedfrom70-490nminskimlatex, Whichwastoolarge [13].
Later, Weloweredthereactionrateinskimlatexbyloweringthe.