ie1c04631_si_001.pdf (1.28 MB)
Download fileMgO/CaO Nanocomposite Facilitates Economical Production of d‑Fructose and d‑Allulose Using Glucose and Its Response Prediction Using a DNN Model
journal contribution
posted on 2022-02-03, 01:13 authored by Senthil
M. Arumugam, Dalwinder Singh, Sangeeta Mahala, Bhawana Devi, Sandeep Kumar, Sunaina Jakhu, Sasikumar ElumalaiThis
study presents a method for the economical production of fructose
and allulose (a valuable byproduct) directly from glucose over a MgO/CaO
nanocomposite under an aqueous condition. The catalyst containing
MgO and CaO at equal proportions helped manipulate the inherent characteristics
of CaO, particularly strong basicity and surface properties. The analytical
characterizations revealed that the structural assembly is such that
MgO settles at the surface to initiate the isomerization reaction
by providing a higher number of weak/medium base sites. The CaO present
beneath undertakes the sequential conversion of the enol-intermediate
to ultimate fructose and byproducts (mannose and allulose). Thus,
the catalyst accelerated the glucose interconversion to obtain a fructose
yield as high as 33 wt % with 80% selectivity within 15 min. At the
same time, it also initiated the C-3 fructose epimerization to yield
allulose (a low-calorie sugar molecule). Moreover, the adopted deep
neural network modeling well predicted the catalytic response with
the MAE <5%. The technoeconomic analysis estimated the minimum
selling price of different products to be US $ ∼4/kg (fructose),
$ ∼4/kg (mannose), and $ ∼10/kg (allulose).
History
Usage metrics
Keywords
technoeconomic analysis estimatedparticularly strong basicityminimum selling pricemedium base sitesanalytical characterizations revealedresponse prediction using3 fructose epimerizationcatalyst containing mgocatalytic responsecatalyst accelerated∼ 4∼ 10‑ fructosevaluable byproductultimate fructosestudy presentsstructural assemblysequential conversionmgo settlesisomerization reactioninherent characteristicshigher numberfructose yieldfructose ),economical productiondnn modeldifferent productsaqueous conditionalso initiated5 %.33 wt