#Mestrenova stacked and integration skin
* lactobacillus bacteria (found on the skin of the aloe vera plant – these bacteria “eat” malic acid and produce lactic acid) * excessive heat (hydrolyzation of acemannan acetyl groups to acetic acid (vinegar) or formic acid) “quality” of the aloe vera raw material – the absolute concentrations ofĭegradation products can tell you a lot about the exposure of the raw Process NMRĪssociates method can perform this analysis but also tell you the * additives: sucrose, fructose, glycine, flavorants (contain ethanol and propylene glycol)įor the components above it is possible to obtain a wt% of thatĬomponent in a juice sample – the freeze drying process is then used toĭetermine the wt% solids in the juice and the dry weight concentrationsĬurrently testing of aloe vera raw materials revolve around acemannanĪnd whole leaf marker content and the presence of glucose. * degradation products: lactic acid, acetic acid, fumaric acid, pyruvic acid, formic acid, succinic acid, and ethanol * whole leaf markers: isocitrate, iso-citrate lactone, citric acid * aloe vera components: acemannan, glucose, malic acid Possible to assign and quantify the following components of an aloe vera Leaf part of the aloe plant as part of the citric acid cycle. Utilized in this test to indicate the presence of whole leaf materialĪre iso-citrate and iso-citrate lactone which are formed in the green Products) must be freeze dried for this analysis. Powder aloe vera raw materials (100x/200x) canīe analyzed directly and juice samples (1x, 5x, 10x, commercial The NMR system being utilized at the Chevron Richmond refinery is a Qualion 60 MHz NMR system utilizing a 31P probe.įor further details or to discuss your own NMR applications please contact Paul Giammatteo (Tel: +1 20)ĭeveloped an extension of its 1H NMR analysis of Aloe Vera raw materialsĪnd products analysis. Relative areas of these peaks are used to calculate theįigure 3: High field and low field 31P NMR spectra of Used Phosphoric Acid from Alkylation Processįigure 4: 31P NMR spectra and calculated acid strengths obtained on 3 different used phosphoric acid samplesįigure 5: Another comparison of 7 Tesla laboratory acquired NMR dataĬompared to rapid at-line 1.4 Tesla NMR assay of phosphoric acid Ppm corresponds to internal P atoms in the middle of polyphosphoricĪcid chains. The terminal P atoms of a polyphosphoric acid chain, and the peak at -30 The peak at 0 ppmĬorresponds to orthophosphoric acid, the peak at -15 ppm corresponds to Tesla (24.2 MHz) of actual process samples. The NMR analysis isįigure 2: 31P NMR signal acquired at 24.2 MHz on several concentrations of phosphoric acid in water.įigure 3 shows the 31P NMR data obtained at 7 Tesla (121 MHz) and 1.4 Phosphoric acid concentrations dissolved in water. Instrument provides more than adequate resolution to perform the acidįigures 1 and 2 show quantitative 31P NMR spectra of different SomeĮxamples of the system performance are shown along with the comparison System is located on a lab bench in the process lab building. Magnet system operating at 58.3 MHz for 1H and 24.2 MHz for 31P. The “at-line” NMR system is a high resolution Qualion permanent Non-existent and sample waste is minimal. (high viscosity sample with no solvents being added) and are placeĮasily into the NMR probe. (length) sample tubes in order to accommodate sample handling issues The NMR samples are placed in specially designed 9 mm (diameter) x 50 mm In the existing process lab adjacent to the process unit control room. If sample analyses was required after researchįacility working hours the NMR lab technicians were required to come inĪnd run the NMR for the process operators.Ī simple permanent magnet bench-top NMR system has now been placed MHz for 31P) themselves, but had to wait for NMR technician and The fact that the process operators were not able to perform theĪnalyses on the conventional high field NMR systems (400 MHz for 1H, 161 The technical center in order to perform the 31P NMR analysis on a highįield superconducting NMR system. Included transporting samples several miles from the refinery process to The Chevron Richmond Refinery needed a simple and quick measurement Resolution 31P NMR system for at-line analysis of a phosphoric acid
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