Publication: Method valıdatıon for determınatıon of kynurenic acid content in natural products by rp-hplc-uv
Date
2024-05-17
Authors
Authors
Kara, Yakup
Kolaylı, Sevgi
Journal Title
Journal ISSN
Volume Title
Publisher
Bursa Uludağ Üniversitesi
Abstract
Kynurenik asit (KYNA) başta kestane balı olmak üzere ıhlamur ve diğer bazı ballarda bulunan farmakoaktif özelliğe sahip bir metabolittir. KYNA’nın antiinflamatuar ve immünosüpresif fonksiyonu düşünüldüğünde biyolojik yolaklar için çift taraflı bir etkiye sahip olduğu görülebilir. Bu sebeple de önemli bir doğal ürün olan ballardaki miktarının belirlenmesi ve bilinmesi sağlık üzerinde yüksek bir etkiye sahip olabilir. Bu metabolitin hem doğal ürünlerde hem de hayvan dokularında tespitine yönelik çalışmalar devam etmekte olup, hızlı ve kolay uygulanabilir metotların geliştirilmesi önem arz etmektedir. Bu çalışma kapsamında doğal ürünlerin (bal, kestane poleni ve kestane çiçeği) KYNA içeriğinin kantitatif olarak kısa sürede belirlenmesi amacıyla ters faz yüksek performanslı sıvı kromatografisinde ultraviyole dedektörü (RP-HPLC-UV) kullanılarak yeni bir metot geliştirilmiştir. Elde edilen verilere göre LOD ve LOQ değerleri sırasıyla 0,030 µg/mL ve 0,092 µg/mL olarak bulunmuştur. Aynı zamanda KYNA’nın ultra saf su (UPW), %70 EtOH, EtOH ve MeOH çözücülerinde hazırlanmış çözeltileri bu metotta analiz edilmiş ve UPW ‘un en uygun çözücüsü olduğu görülmüştür. Bu araştırmanın bulguları, özellikle kestane balının botanik kökeninin ayırt edilmesinde uygulanması açısından KYNA'nın ölçülmesine önemli ölçüde katkıda bulunabilir.
Kynurenic acid (KYNA) is a metabolite with pharmacoactive properties found primarily in chestnut honey, linden, and other honeys. Considering the anti-inflammatory and immunosuppressive functions of KYNA, it can be seen that it has bidirectional effects on biological pathways. For this reason, determining and knowing the amount of honey, an important natural product can have a high impact on health. Studies on the detection of this metabolite in both natural products and animal tissues are ongoing, and it is important to develop fast and easily applicable methods. Within the scope of this study, a new method was created using an ultraviolet detector (RP-HPLC-UV) in reverse-phase high-performance liquid chromatography to determine the KYNA content of natural products (honey, chestnut pollen, and chestnut flowers) quantitatively in a short time. According to the data obtained, LOD and LOQ values were found to be 0.030 µg/mL and 0.092 µg/mL, respectively. At the same time, solutions of KYNA prepared in ultrapure water (UPW), 70% EtOH, EtOH and MeOH solvents were analyzed in this method, and it was found that UPW was the best solvent. The findings of this research can contribute significantly, particularly in the application of measuring KYNA, to distinguishing the botanical origin of chestnut honey.
Kynurenic acid (KYNA) is a metabolite with pharmacoactive properties found primarily in chestnut honey, linden, and other honeys. Considering the anti-inflammatory and immunosuppressive functions of KYNA, it can be seen that it has bidirectional effects on biological pathways. For this reason, determining and knowing the amount of honey, an important natural product can have a high impact on health. Studies on the detection of this metabolite in both natural products and animal tissues are ongoing, and it is important to develop fast and easily applicable methods. Within the scope of this study, a new method was created using an ultraviolet detector (RP-HPLC-UV) in reverse-phase high-performance liquid chromatography to determine the KYNA content of natural products (honey, chestnut pollen, and chestnut flowers) quantitatively in a short time. According to the data obtained, LOD and LOQ values were found to be 0.030 µg/mL and 0.092 µg/mL, respectively. At the same time, solutions of KYNA prepared in ultrapure water (UPW), 70% EtOH, EtOH and MeOH solvents were analyzed in this method, and it was found that UPW was the best solvent. The findings of this research can contribute significantly, particularly in the application of measuring KYNA, to distinguishing the botanical origin of chestnut honey.
Description
Keywords
Kynurenik asit, Kestane balı, HPLC-UV, Kynurenic acid, Chestnut honey