The phenolic compounds, tocopherols, and phytosterols in the edible oil of guava (Psidium guava) seeds obtained by supercritical CO2 extraction

Abstract

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Microwave and dielectric barrier discharge atmospheric plasma interaction on guava industrial biomass for biomaterial production

“…As reported by Kobori and Jorge (2005), the saponification value of guava seed oil as 189.1 which is higher than reported in our study. If the saponification values are lower, either there are fewer ester linkages or the mean molecular weight of fatty acids is lower (Narváez‐Cuenca et al, 2020). Iodine value is the measure of degree of unsaturation in oil sample.…”

Antiulcer Potential of Psidium guajava Seed Extract Supported by Metabolic Profiling and Molecular Docking

“…The identified compounds as shown in Figure 1 were assorted into different chemical classes. Identification of the compounds was achieved based on HR-ESIMS data and comparison with literature data as follows: Cis-3-Hexenyl isobutyrate (1) [37], cinnamyl acetate (2) [38], coumaric acid (3) [39], β-sitosterol (4) [39], α-tocopherol (5) [39], linoleic acid (6) [39], palmitic acid (7) [39], stearic acid (8) [39], oleic acid (9) [39], linolenic acid (10) [39], vanillic acid (11) [39], 4-Hydroxybenzaldehyde (12) [39], vanillin (13) [39], syringaldehyde (14) [39], coniferylaldehyde (15) [39], sinapaldehyde (16) [39], abscisic acid (17) [39], cinnamic acid (18) [39], cinnamaldehyde (19) [39], campesterol (20) [39], stigmastanol (21) [39], stigmasterol (22) [39] and quercetin 4 -glucuronide (23) [40]. Guava seed extract provided substantial protection against the ulcerogenic effects of indomethacin in a dose-dependent manner (Table 1).…”

Occurrence of Tocols in Foods: An Updated Shot of Current Databases

“…Mezni et al found α-and c-tocopherols at the concentrations of 119 mg/kg and 23 mg/kg of oil, respectively, using HPLC analysis [18]. In a recent study, the yield of edible oil was 8.6 ± 1.2 g oil/100 g of guava seeds by supercritical CO 2 extraction, and then the c-tocopherol with a concentration of 82.6 ± 3.7 mg/100 g oil was detected by the GC-MS method [19]. One of the most important products derived from fruit is Hass avocado (Persea americana Mill.)…”