Physico-chemical parameters and antioxidant activity of Romanian sea buckthorn berries was written by Ion, Violeta Alexandra;Parvulescu, Oana Cristina;Velcea, Diana;Popa, Oana;Ahmadi, Mirela. And the article was included in Revista de Chimie (Bucharest, Romania) in 2019.Reference of 659-70-1 This article mentions the following:
Physico-chem. parameters of Romanian sea buckthorn fresh or dried berries, including titratable acidity (2.28 鍗?0.06 g malic acid/100 g FM), pH (2.60 鍗?0.08), contents of moisture (75.94 鍗?2.14 g/100 g FM), ash (2.83 鍗?0.11 g/100 g DM), ascorbic acid (1337.6 鍗?37.2 mg/100 g FM), oil (3.82 鍗?0.16 g/100 g FM), and macro elements, mainly K (11654 mg/kg DM), Mg (668 mg/kg DM), Ca (645 mg/kg DM), Na (401 mg/kg DM), and P (271 mg/kg DM), were evaluated in this paper. The most abundant volatile compounds found in the volatile fraction of berries were isopentyl isovalerate (30.8%), heptanal (11.7%), Et hexanoate (10.5%), Et isovalerate (8.1%), hexanal (7.5%), and Et 2-methylbutyrate (6.3%). Total phenolic content, total flavonoids content, and antioxidant activity (expressed as DPPH free radical scavenging activity by inhibition of DPPH) of extract solutions obtained from dried berries by MAE using ethanol/water mixture as a solvent were estimated at different ratios of solvent volume/vegetal material mass (15-30 mL/g) and ethanol/water (50/50, 60/40, 70/30, and 80/20 volume/volume). Inhibition of DPPH (22.61-48.60%) was well correlated with total phenolic content (4.42-10.04 mg caffeic acid equivalent/g DM) and total flavonoids content (5.37-11.14 mg quercetin equivalent/g DM). In the experiment, the researchers used many compounds, for example, Isopentyl 3-methylbutanoate (cas: 659-70-1Reference of 659-70-1).
Isopentyl 3-methylbutanoate (cas: 659-70-1) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Cyclic esters are called lactones, regardless of whether they are derived from an organic or inorganic acid. One example of an organic lactone is 绾?valerolactone.Reference of 659-70-1
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics