Utilization of tomato peel waste from canning factory as a potential source for pectin production and application as tin corrosion inhibitor

Evaluation of Castor Bark Powder as a Corrosion Inhibitor for Carbon Steel in Acidic Media

“…5(a)) indicate that metal oxidation is controlled by activation, since they feature a long linear stretch (Tafel behaviour), whereas the cathodic process is clearly H + reduction. In addition, the shapes of both branches do not change with the addition of castor bark powder, further indicating that the corrosion mechanism does not change and that the inhibiting molecules act by blocking the reaction sites 28 , which is in agreement with the EIS results.…”

“…The large peak centered at 3421 cm -1 can be attributed to OH or/and NH from water or amines 25,26 . Absorption peak at 2923 cm -1 can be assigned to C-H and its low intensity indicates that only short chain compounds are detected 27,28 . The band at 1653 cm -1 can be assigned to carbonyl group CN or C=O from carboxylates, as unsaturated carboxylic acids (ricinoleic acid) are present in the castor oil composition 6,26 .…”

Natural Pectin Polysaccharides as Edible Coatings

“…) and oxalic acid (4 g·L −1 ) in two extraction steps (24 and 12 h respectively) [33]. The highest pectins yields were 32.6% and 31.9% in two batches, but the pectin quality was low in the second extraction step.…”

Pre-treatment and extraction techniques for recovery of added value compounds from wastes throughout the agri-food chain

“…This industrial processing gives rise to remnants that could be reused since they are a good source of dietary fibres, pectins and phytochemicals. 374 Because of the demands of final consumers for safe and high quality food products as well as the expectation of manufacturers for sustainable methods of food industrialisation, new techniques based mostly on non-thermal principles are being developed. These technologies include for example: pulsed electric fields (PEF), power ultrasound (PUS), high hydrostatic pressure (HHP), supercritical fluid extraction (SFE) and high voltage electric discharges (HVED).…”

“…They observed that the thermomechanical effect of ultrasounds depends on the type of tissue used, and that it seemed to be lower for the roots than for the leaves. Grassino et al 374,385 compared the yield of pectin extracted from tomato waste using convectional extraction and ultrasound-assisted extraction. The yield of pectin was high with both approaches, however, the duration of the extraction with conventional extraction was 24 hours in comparison with UAE, which lasted for only 15 min.…”