Essays about: "HPLC"

Showing result 11 - 15 of 136 essays containing the word HPLC.

  1. 11. Determining caffeine and 3-caffeoylquinic acid content in artisanal processed specialty coffee varieties with different roasting grades, origins, and brewing methods

    University essay from Linnéuniversitetet/Institutionen för kemi och biomedicin (KOB)

    Author : Oliver Mihajlovic; [2023]
    Keywords : kaffeanalys; koffein; klorogensyra; HPLC; analytisk kemi;

    Abstract : Coffee is one of the most consumed beverages in the world, with about 10 million tons of coffee consumed in 2021. There are a lot of steps between the coffee tree and served beverage, as there are several processing methods each contributing to differences in fragrance, aroma, and acidity. READ MORE

  3. 12. Optimization of sterilization method for cultivation of filamentous fungi on lemon waste

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Oliver Conradsson; David Ljungberg; [2023]
    Keywords : Lemon waste; lemon waste; sterilization; autoclavation; fungal cultivation; bubble column bioreactor; fungal biomass Rhizopus delemar;

    Abstract : Consumption of citrus fruits and citrus juice production creates wastes, which could be valorized by using it for cultivating fungi. Before cultivation, the medium needs to be sterilized though autoclavation. Larger volumes used when autoclaving requires longer heating cycles and therefore runs the risk of degrading the medium to a greater extent. READ MORE

  4. 13. Synthesis and analysis of potential metabolites of ADB-5´Br-BUTINACA

    University essay from Linköpings universitet/Kemi

    Author : Alaa Malekshahineia; [2023]
    Keywords : metabolites; NPS; synthetic cannabinoids;

    Abstract : In recent years, there has been a rise in the use of New Psychoactive Substances (NPS) that mimic the effects of controlled drugs and licensed medicines, which have become a significant public health concern globally. Synthetic cannabinoids, a rapidly expanding category of NPS, with much higher potency and binding affinity to the cannabinoid receptors than ∆9-tetrahydrocannabinol (THC), have led to serious psychiatric complications and other adverse effects. READ MORE

  5. 14. Deacetylated Hyaluronan : Exploration of deacetylation techniques for hyaluronan (oligo and polysaccharides)

    University essay from Uppsala universitet/Institutionen för materialvetenskap

    Author : Sima Mardini; Hanna Björk; Marcus Möller; Carl Lagergren; Oscar Samuelsson; [2023]
    Keywords : hyaluronic acid; deacetylated hyaluronan; N-deacetylation; re-acetylation; hydrogels;

    Abstract : Hyaluronic acid is an organic polysaccharide with a wide range of uses in medical and cosmetic industries due to its physiological properties. Crosslinked hyaluronic acid is a commonly used filler agent because of its water retention capabilities. N-deacetylation can be performed to enable new derivatives of hyaluronic acid. READ MORE

  6. 15. The effect of temperature on the chemical stability of Vitamin C in a cosmetic product – Development of an HPLC-method for quantitative analysis

    University essay from KTH/Tillämpad fysikalisk kemi

    Author : Sofia Thuresson; [2022]
    Keywords : Vitamin C; HPLC; Stability; Degradation; Antioxidant; Vitamin C; HPLC; Stabilitet; Nedbrytning; Antioxidant;

    Abstract : Vitamin C är en populär ingrediens i hudvårdsprodukter, bland annat på grund av dess positiva effekter på kollagen-produktionen i huden och dess antioxidativa egenskaper. Dessvärre är vitamin C en känslig ingrediens som lätt bryts ned av ljus, syre, hög temperatur eller fel pH-värde. READ MORE