Comparative Analysis of the Nutritional Components and Antioxidant Activities of Different Brassica juncea Cultivars

Abstract

The purpose of this study was to compare the nutritional components and antioxidant activities of two different cultivars of Brassica juncea (Dolsan, Yeosu, Korea (BJD) and (Jeongseon, Gangwon, Korea (BJJ)). We investigated the proximate composition (moisture, crude ash, crude protein and crude lipid), antioxidant activities (2,2-Diphenyl-2-picrylhydrazil (DPPH) scavenging activity and ferric reducing antioxidant power (FRAP)), total phenol content, total flavonoid content and sinigrin content by high-performance liquid chromatography analysis. Our results show that the proximate compositions of BJD and BJJ were not significantly different. However, both the DPPH radical scavenging and FRAP activities of the BJJ extracts were higher than those of the BJD extracts. The total phenol contents of the BJD and BJJ extracts were 6.56 and 9.80 mg gallic acid equivalent/g, respectively. The total flavonoids content of the BJD and BJJ extracts were 20.92 and 34.81 mg rutin equivalent/g, respectively, whereas the sinigrin contents, one of the major compounds in BJD and BJJ extracts, were 16.16 mg/g and 11.73 mg/g, respectively. In this study, we confirmed that, by comparing BJJ and BJD, the sinigrin content of BJD was higher than that of BJJ, but the antioxidant activity and phenol content of BJD were superior to that of BJJ.

Antiobesity effect of Brassica juncea cultivated in Jeongseon with optimized sinigrin content using 3T3‐L1 adipocytes

“…However, studies have only been conducted on B. juncea cultivated in Dolsan, Yeosu, Korea, and not on B. juncea cultivated in Jeongseon (BJJ). In previous studies, we confirmed that the phenol and flavonoid content of BJJ is higher than that of BJD, and accordingly, the possibility of using BJJ as a health functional food material has been evaluated (Kwon et al, 2020). Therefore, we established an extraction method that can optimize the content of sinigrin in the BJJ extract, and investigated the antioxidant and antiobesity effects of the extract.…”

“…These results were similar to the reduction of lipid accumulation in the present study, indicating that BJJ extract and sinigrin effectively inhibited ROS production, resulting in an antiobesity effect. In a previous study, we reported that about 34.81 mg rutin equivalent/g of flavonoid compounds are present in BJJ extract, which has excellent antioxidant efficacy (Kwon et al, 2020). In this study, the ROS reduction efficacy in adipocytes is thought to have a major effect on antioxidant activity due to the complex action of flavonoid components in BJJ extract.…”

“…The sinigrin content in the BJJ extract was measured using the method described in a previous study (Kwon et al, 2020). The instruments used for the analysis were a Waters 2695 Separation Module HPLC system and a Waters Photodiode Array Detector (Waters Corporation, Milford, MA, USA).…”

Proximate Composition and Biological Assay of Two Mustard Species (Brassica nigra (L.) K. Koch and Brassica tournefortii Gouan) in Libya

“…Rios et al, (2014) addressed the importance of raw fats and oils for modified-food products, such as bakery, sauces, margarine and confectionery. As compared with the study Brassica species, Kwon et al, (2020) reported a low value of crude protein (1.5%) in Brassica juncea cultivars in Korea. The percent of carbohydrates was significantly different between shoots and roots of the two Brassica species.…”

Determination Of Total Flavonoid Content And Total Phenolic Content Of Pitanak Fruit Skin Extracts (Nephelium sp.)

“…Senyawa fenolik yang terdapat pada tanaman dilaporkan memiliki fungsi antioksidan yang tinggi. Ketika kandungan polifenol total meningkat, aktivitas fisiologis, seperti antioksidan akan meningkat (Kwon et al, 2020). Fenolik tersebar luas…”