Abstract
Four selected A. gangeticus accessions were evaluated in terms of color attributes, phytopigments, including betaxanthin, betacyanin, and carotenoid profiles, proximate, minerals, and antioxidant capacity (AC). Color attributes, phytopigments, proximate, minerals, and AC of A. gangeticus significantly varied across the accessions. For the first time, we identified four betacyanin compounds, such as amaranthine, iso-amaranthine, betanin, iso-betanin. We also identified five carotenoid compounds zeaxanthin neoxanthin, violaxanthin, lutein, and pro-vitamin A in A. gangeticus accessions. A. gangeticus contained adequate carbohydrates, protein, moisture, and dietary fiber. We found adequate iron, manganese, copper, zinc, sodium, molybdenum, boron, potassium, calcium, magnesium, phosphorus, sulfur in A. gangeticus accessions. The accessions LS7 and LS9 had considerable color attributes, betacyanin, and carotenoid compounds, proximate, nutraceuticals, betalain, betaxanthin, and AC that could be used as preferable potent antioxidant varieties for consumption as sources of phytopigments, nutraceuticals, and antioxidants. The correlation study revealed that antioxidant constituents of A. gangeticus accession were strongly associated with AC. The identified components of betacyanin and carotenoid in A. gangeticus demands detail pharmacological study. The baseline data on color attributes, betacyanin, and carotenoid profiles, betaxanthins, betalains, and AC obtained in this present study could contribute to the scientific evaluation of pharmacologically active principles in A. gangeticus.
Highlights
Four selected A. gangeticus accessions were evaluated in terms of color attributes, phytopigments, including betaxanthin, betacyanin, and carotenoid profiles, proximate, minerals, and antioxidant capacity (AC)
The evaluated traits demonstrated a wide range of variations across the A. gangeticus accessions
Our result showed that the A. gangeticus accession is an excellent source of lutein, violaxanthin, neoxanthin, zeaxanthin, total xanthophylls, β-carotene, and total carotenoids among leafy vegetables that has important free radical-scavenging a ctivity[19]
Summary
Four selected A. gangeticus accessions were evaluated in terms of color attributes, phytopigments, including betaxanthin, betacyanin, and carotenoid profiles, proximate, minerals, and antioxidant capacity (AC). The most prominent identified carotenoid was lutein, followed by violaxanthin, while the zeaxanthin and neoxanthin contents were very low in A. gangeticus accessions (Fig. 3). We noticed much higher Zeaxanthin, lutein, β-carotene, total xanthophylls, neoxanthin, and total carotenoid contents of A. gangeticus accession compared to the contents of vegetable amaranth accession of Raju et al.[57].
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