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Pàgina 1 des de 43 resultats
In vitro and in vivo hypoglycemic effects of cyanidin 3-caffeoyl-p-hydroxybenzoylsophoroside-5-glucoside, an anthocyanin isolated from purple-fleshed sweet potato.
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Anthocyanins are major components of purple sweet potatoes (PSP) with antioxidant, anti-obesity, and antidiabetic activity. In this study, we evaluated the hypoglycemic effects of 12 individual anthocyanins purified from PSP (Korean variety Shinzami). We separated the anthocyanins using liquid
Six Diacylated Anthocyanins from the Storage Roots of Purple Sweet Potato, Ipomoea batatas.
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Eight acylated anthocyanins were isolated from the storage roots of the purple sweet potato, Ipomoea batatas cv Yamagawamurasaki, which is the source of the food colorant "purple sweet potato color." Of these, six pigments were identified as diacylated anthocyanins, cyanidin and peonidin
Preparative isolation and purification of anthocyanins from purple sweet potato by high-speed counter-current chromatography.
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High-speed counter-current chromatography (HSCCC) was applied to the preparative isolation and purification of peonidin 3-O-(6-O-(E)-caffeoyl-2-O-beta-D-glucopyranosyl-beta-D-glucopyranoside)-5-O-beta-D-glucoside (1), cyanidin 3-O-(6-O-p-coumaroyl)-beta-D-glucopyranoside (2), peonidin
Molar absorptivities (ε) and spectral and colorimetric characteristics of purple sweet potato anthocyanins.
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Purple sweet potato, a source of acylated cyanidin and peonidin derivatives, is commercially available as a food colorant. Our objectives were to determine molar absorptivities (ε), spectral and colorimetric properties of purple sweet potato anthocyanins. Anthocyanins were isolated by
Changes in anthocyanins and volatile components of purple sweet potato fermented alcoholic beverage during aging.
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Purple sweet potato was fermented into alcoholic beverage. By using LC-MS analysis, 12 types of anthocyanins were found in the purple sweet potato alcoholic beverage (PSPFAB); these were based on cyanidin and peonidin as aglycones. The anthocyanins in young PSPFAB mainly consisted of acylates. The
An analytical pipeline to compare and characterise the anthocyanin antioxidant activities of purple sweet potato cultivars.
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Purple sweet potato (Ipomoea batatas L.) is rich in anthocyanin pigments, which are valuable constituents of the human diet. Techniques to identify and quantify anthocyanins and their antioxidant potential are desirable for cultivar selection and breeding. In this study, we performed a quantitative
Characterisation and stability of anthocyanins in purple-fleshed sweet potato P40.
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Purple-fleshed sweet potato P40 has been shown to prevent colorectal cancer in a murine model. This study is to identify anthocyanins by using HPLC/MS-MS and assess the stability during various cooking conditions. P40 possesses a high content of anthocyanins up to 14 mg/g dry matter. Total 12
Evaluation of structure and bioprotective activity of key high molecular weight acylated anthocyanin compounds isolated from the purple sweet potato (Ipomoea batatas L. cultivar Eshu No.8).
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In order to figure out the key acylated anthocyanin compounds accounting for the bioprotective activity of purple sweet potato (Ipomoea batatas L.), ODS packing column, semi-preparative HPLC method, activity evaluation assays, and ultra-high-performance liquid chromatography with quadrupole
Anthocyanidin-containing compounds occur in the periderm cell walls of the storage roots of sweet potato (Ipomoea batatas).
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Anthocyanins, which are O-glycosylated derivatives of anthocyanidins, are responsible for the red, blue and purple coloration of many organs of angiosperms where they have previously been reported to occur in vacuoles and cytoplasm. However, bright-field microscopy of sections of the storage roots
Ultrasonic impact on viscosity and extraction efficiency of polyethylene glycol: A greener approach for anthocyanins recovery from purple sweet potato.
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Purple sweet potatoes are known for its vibrant purple color due to high level of anthocyanins. A polyethylene glycol based ultrasonic-assisted green extraction (PEG-UAE) of anthocyanins from purple sweet potato was proposed. Different types of PEG were tested for anthocyanin extraction along with
HPLC-DAD-ESI-MS(2) analytical profile of extracts obtained from purple sweet potato after green ultrasound-assisted extraction.
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Ultrasound pre-treatment (UAE) was applied to assist the extraction of valuable compounds (polyphenols (especially anthocyanins), and proteins) from purple sweet potato (PSP). Under optimum conditions (ultrasound time (40min); supplementary hot extraction (80°C) up to 120min; pH: 2.5; ethanol
Preparative isolation of anthocyanins from Japanese purple sweet potato (Ipomoea batatas L.) varieties by high-speed countercurrent chromatography.
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Purple-fleshed sweet potatoes (Ipomoea batatas L.) contain a very complex anthocyanin profile due to the presence of several non-, mono-, and diacylated glucosides of cyanidin and peonidin. In this study, the anthocyanin composition of four Japanese purple sweet potato cultivars (Chiran Murasaki,
Effect of antioxidant activity and functional properties of Chingshey purple sweet potato fermented milk by Lactobacillus acidophilus, L. delbrueckii subsp. lactis, and L. gasseri strains.
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In this study, individual selected lactic acid bacteria strains Lactobacillus acidophilus (LA), L. delbrueckii subsp. lactis (LDL), and L. gasseri (LGA) were grown in Chingshey purple sweet potato (CPSP) substrate/media. CPSP is rich in anthocyanin, which possesses antioxidant activity and in vitro
Changes in anthocyanidin levels during the maturation of color-fleshed potato (Solanum tuberosum L.) tubers.
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Certain potato cultivars are capable of producing anthocyanin pigments in the potato skin and flesh and those pigments have been shown, together with other phytochemicals, to promote good health. Six common anthocyanidins (cyanidin, delphinidin, petunidin, pelargonidin, malvidin and peonidin) were
Composition and stability of anthocyanins from purple Solanum tuberosum and their protective influence on Cr(VI) targeted to bovine serum albumin.
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Anthocyanins from the purple Solanum tuberosum newly cultivated by the Taian Academy of Agricultural Sciences were extracted and analyzed using high-performance liquid chromatography (HPLC) and UV-vis spectroscopy. Four individual anthocyanins were detected as the major components, and the total
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