Capsaicin and Ascorbic Acid Variability in Chilli and Paprika Cultivars as Revealed by HPLC Analysis
Published in 2013, this study used high-performance liquid chromatography (HPLC) to measure capsaicin and ascorbic acid in seven Indian pepper varieties or accessions from Capsicum annuum and Capsicum frutescens.The authors reported substantial variation among the peppers and identified CF1 as a potential source of capsaicin and Bayadagi Kaddi as a potential source of vitamin C for breeding.
What the study did and found
Tilahun, Paramaguru and Rajamani measured capsaicin and ascorbic acid in seven Indian pepper varieties or accessions using HPLC. Six entries belonged to Capsicum annuum — CA 97, CCH, K1, KTPL19, Arka Abhir and Bayadagi Kaddi — and CF1 belonged to Capsicum frutescens.
Based on pungency value, CA 97, CCH, K1 and CF1 were classified as highly pungent peppers. CF1 had the highest capsaicin concentration reported at 445 mg/100 g dry weight, corresponding to 71,200 SHUs, while Arka Abhir had the lowest at 29 mg/100 g dry weight and 4,672 SHUs.
For ascorbic acid, Bayadagi Kaddi had the highest reported value at 189 mg/100 g fresh weight. CA 97 had the lowest value at 55.3 mg/100 g fresh weight. The authors concluded that this variability could be exploited in breeding and identified CF1 and Bayadagi Kaddi as potential sources of capsaicin and vitamin C, respectively.
Why it is cited
The paper provides a compact example of using chemical analysis to characterize useful variation within pepper germplasm. Rather than treating pungency and nutritional composition as uniform properties of chilli and paprika, it shows that individual accessions can differ markedly in the compounds measured.
It is particularly useful in plant-breeding discussions because the highest values for the two target traits occurred in different material. CF1 stood out for capsaicin and pungency, whereas Bayadagi Kaddi stood out for ascorbic acid.
The study therefore links analytical screening with germplasm selection. Its conclusion is not that one accession is superior for every purpose, but that contrasting biochemical profiles can provide different potential sources for breeding objectives.
The study demonstrated substantial biochemical variation among the seven pepper varieties and accessions examined by HPLC. CF1 showed the highest reported capsaicin concentration at 445 mg/100 g dry weight and 71,200 SHUs, while Bayadagi Kaddi had the highest reported ascorbic acid content at 189 mg/100 g fresh weight.The comparison was based on a relatively small set of pepper germplasm and focused on capsaicin, pungency and ascorbic acid. Differences among the tested accessions identified promising material for specific breeding objectives, while broader evaluation would be needed to assess trait stability, inheritance and performance under different growing conditions.Capsaicin and ascorbic acid were reported on different measurement bases. Capsaicin values were expressed per 100 g dry weight, whereas ascorbic acid values were expressed per 100 g fresh weight, so the numerical concentrations represent different compositional measurements and are not directly comparable. |
The topic today
The 2013 article remains relevant as an example of biochemical screening in Capsicum germplasm. Its central breeding message is that measurable variation in fruit chemistry can help identify material worth evaluating for specific quality traits.
For this study, CF1 was the highest reported capsaicin source among the seven entries, Bayadagi Kaddi had the highest reported ascorbic acid content, and the authors regarded both as potential breeding resources.
Questions about trait stability, inheritance and performance across environments require broader breeding trials or genetic studies beyond this seven-entry HPLC comparison.