Bio-based material from fruit waste of orange peel for industrial applications

Orange Pomace Facilitated Synthesis of Cu2O/ZnO Nanocomposites for Visual and Optical Sensing of Silver Ions in Water for Environmental Remediation

“…The spectral peak at 1613 cm −1 and 1337 cm −1 corresponds to the asymmetric and symmetric carbonyl group stretching respectively. The spectral peak at 1061 cm −1 represents the C−O stretching vibrations of biomolecules present in OPE [44] . The presence of characteristic peaks for Cu−O of Cu 2 O and Zn−O of ZnO at 624 cm −1[45] and 436 cm −1 , [46] respectively confirms the presence of Cu 2 O and ZnO in the NCs [42] .…”

“…The spectral peak at 1061 cm À 1 represents the CÀ O stretching vibrations of biomolecules present in OPE. [44] The presence of characteristic peaks for CuÀ O of Cu 2 O and ZnÀ O of ZnO at 624 cm À 1 [45] and 436 cm À 1 , [46] respectively confirms the presence of Cu 2 O and ZnO in the NCs. [42] The presence of carbonyl group and CÀ O stretching peaks clearly signify that the Cu 2 O/ZnO NCs surface is functionalized by the OPE which acted as a capping agent.…”

Spectral characterization and biological evaluation of biomolecules from the peels of three orange fruits: a comparative study

“…The FT-IR spectrum analysis of RM Valencia revealed various fingerprint regions at 3327.23, 2946, 2834, 1649, 1450, 1320, 1110 and 1017 cm -1 representing the presence of various bioactive components such as glycosides, flavonoids, saponins, polysaccharides, limonene, beta-sitosterol, and fatty acids (Table 4). Interestingly, Yaradoddi et al (2022) reported that chloroform extract of Citrus sinensis orange peels exhibited FT-IR spectroscopy at 3352.82, 2919.84, 1691.92, 1604.83, 1398.99, 1051.94 cm −1 . These frequencies corresponded with polymeric OH, carboxylic acids, alkenes, aromatic groups, amino acids, carbohydrates and beta-d-galacturonic acid, respectively.…”

Review on food waste valorisation for bioplastic production towards a circular economy: sustainable approaches and biodegradability assessment

“…Several different kinds of heavy metal catalysts are required for this reaction, such as zinc( ii ) and titanium( iv ), tin( ii ), 2-ethylhexanoate, or stannous octoate (Sn(Oct) 2 ). 78 The most recalcitrant, dangerous, and toxic substances are found in oil waste, which is produced in enormous quantities around the world. The used oil waste that is produced in homes and industries is having catastrophic effects on the environment.…”

“…Because of its considerable resistance to solvents, Bio-PE can only be recycled through pyrolysis. 78 Only a small quantity of PGA is utilised in medicine, where it totally biodegrades, and there is little of it in circulation. PHA should be organically recycled since it lowers the price of animal feed and minimises the demand for antibiotics.…”