Extraction of flavonoids from flavonoid-rich parts in tartary buckwheat and identification of the main flavonoids

Liu, Benguo; Yongyi, Zhu

doi:10.1016/j.jfoodeng.2005.11.001

Cited by 73 publications

(40 citation statements)

References 6 publications

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“…undulatum, whereas low amounts were observed in P. viviparum and P. aviculare. Although flavonoid content (Fabjan et al, 2003;Liu and Zhu, 2007) and AOCs (Liu et al, 2008) of F. tataricum and another kinds of cultivated buckwheat, F. esculentum Moench, were extensively studied, TQ content of Mono. tSeye-oidov et al Table 2 were used for regression analysis.…”

Section: Resultsmentioning

confidence: 99%

“…Much effort has been made to clarify the chemical composition (Markova et al, 1985), and pharmacological capacity of plants belonging to this family. Flavonoids (Markova et al, 1985;Smolarz, 2002;Datta et al, 2000;Peng et al, 2003), quercetin and rutin (Datta et al, 2000;Fabjan et al, 2003;Liu and Zhu, 2007;Badamtsesteg, et al, 2003) have been isolated from some species. In addition, Polygonaceae plants are grown in large scale in Mongolia and, therefore, draw attention as potential rich sources of flavonoids.…”

Section: Introductionmentioning

confidence: 99%

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Antioxidant Capacities and Total Quercetin Content of Several Species of Polygonaceae in Mongolia

Odbayar

Mikami

Watanabe

et al. 2010

FSTR

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Antioxidant capacities (AOCs) and total phenolic (TP) content of 11 species of Polygonaceae from Mongolia were evaluated using diphenyl picrylhydrazyl radical (DPPH), oxygen radical antioxidant capacity (ORAC) and Folin-Ciocalteu (F-C) assays. Additionally, total quercetin content was determined by high performance liquid chromatography (HPLC) after acid hydrolysis. These plant extracts showed high AOCs using both DPPH (111.9-950.5 μmol Trolox equivalent (TE) /g.dw) and ORAC assays (770.7-2307.9 μmol TE/g.dw), and high TP contents (20.84-113.86 mg Gallic acid equivalent (GAE)/g.dw). AOCs were positively correlated with TP content (DPPH: r = 0.98; ORAC: r = 0.83). Moderate correlations were observed between AOCs and total quercetin content (DPPH: r = 0.58; ORAC: r = 0.51). These results suggest that quercetin glycosides may be one of the important contributors to AOCs of Mongolian Polygonaceae species.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Antioxidant Capacities and Total Quercetin Content of Several Species of Polygonaceae in Mongolia

Odbayar

Mikami

Watanabe

et al. 2010

FSTR

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“…Vsebnost flavonoidov v moki iz centralnega endosperma je bistveno nižja. Glavni flavonoid v tatarski ajdi je rutin, so prav tako v svoji raziskavi ugotovili Liu & Zhu (2007).…”

Section: Flavonoidi V Ajdiunclassified

Izhodišča za raziskave učinkov flavonoidov, taninov in skupnih beljakovin v frakcijah zrn navadne ajde (Fagopyrum esculentum Moench) in tatarske ajde (Fagopyrum tataricum Gaertn.) / Starting points for the study of the effects of flavonoids, tannins ...

Vombergar

Škrabanja²,

Luthar³

et al. 2017

FBG

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IZVLEČEKIzhodišča za raziskave učinkov flavonoidov, taninov in skupnih beljakovin v frakcijah zrn navadne ajde (Fagopyrum esculentum Moench) in tatarske ajde (Fagopyrum tataricum Gaertn. ) V svetu in v Sloveniji uporabljamo za hrano predvsem dve vrsti ajde, navadno ajdo (Fagopyrum esculentum) in tatarsko ajdo (Fagopyrum tataricum). Zanimanje za ajdo se je povečalo zaradi njene prehranske vrednosti. Za razliko od žit, pri katerih primanjkuje lizina, so beljakovine ajde zelo kakovostne, s primerno aminokislinsko sestavo glede na potrebe ljudi. Poleg kakovostnih beljakovin je pomembna vsebnost flavonoidov (rutina in kvercetina), vsebnost mineralnih elementov, prehranskih vlaknin, pa tudi zmožnost uspevanja v mejnih območjih kmetijske pridelave. Eden od razlogov za priljubljenost pridelovanja ajde je odpornost ajde proti patogenom in boleznim ter uspešno tekmovanje z rastjo plevelov. Torej je ajda primerna za ekološko pridelovanje. Ajdovo zrnje nima glutena, zato je varno za ljudi s celiakijo, ki lahko uživajo le brezglutensko hrano. Uporaba zrnja in moke tatarske ajde v prehrani se v novejšem času povečuje zaradi visoke vsebnosti rutina v primerjavi z navadno ajdo. Tatarsko ajdo so vsaj 200 let že pridelovali v Sloveniji, se je pa pridelovanje prenehalo v drugi polovici 20. stoletja. V nekaterih predelih Bosne in Hercegovine ter v mejnem območju Islek (severni Luksemburg, Westeifel v Nemčiji in obmejno območje Belgije) so bila še nedavno edina območja v Evropi s pridelavo tatarske ajde za prehrano ljudi. V zadnjih desetih letih se pridelovanje tatarske ajde vrača tudi v Slovenijo. ABSTRACT Starting points for the study of the effects of flavonoids, tannins and crude proteins in grain fractions of common buckwheat (Fagopyrum esculentum Moench) and Tartary buckwheat (Fagopyrum tataricum Gaertn.)Two species of buckwheat are mainly used around the world and in Slovenia: common buckwheat (Fagopyrum esculentum) and Tartary buckwheat (Fagopyrum tataricum).The renewed interest in buckwheat is based on its nutritional value. Unlike cereals, which are deficient in lysine, buckwheat has excellent protein quality due to a balanced essential amino acid composition. Emphasised are the high protein quality, the concentration of flavonoids (rutin and quercetin), mineral elements and dietary fibre, and the ability to grow in marginal areas. One of the reasons for its popularity is the relative resistance of buckwheat to pest and diseases, and the ability to repress weeds. Buckwheat is thus suitable for ecological cultivation. It does not contain gluten proteins, so it is safe for people who require gluten-free diet (coeliac disease). Tartary buckwheat grain and flour are recently increasingly used in preparing dishes due to its even much higher content of rutin in comparison with common buckwheat. Tartary buckwheat has been cultivated to some extent in Slovenia for centuries, but this ceased before the end of the 20 th century. Some parts of Bosnia and Herzegovina, and the cross-border region Islek -which includes northern Luxemb...

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“…Golongan senyawa polifenol paling banyak dijumpai pada sayuran adalah flavonoid. Aktivitas biologi flavonoid sebagai antioksidan dilaporkan dapat menghambat peroksidasi lipid, menangkal radikal bebas dan spesies oksigen aktif (ROS) serta mengkelat logam (Ammar dkk., 2009;Liu dan Zhu, 2007).…”

Section: Pendahuluanunclassified

EKSTRAKSI DAUN GEDI (Abelmoschus manihot L) SECARA SEKUENSIAL DAN AKTIVITAS ANTIOKSIDANNYA Antioxidant Activities of Sequentially Extracted Gedi’s (Abelmoschus manihot L) Leaves

et al. 2015

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ABSTRAKDaun Gedi (Abelmoschus manihot L) merupakan salah satu bahan utama tinutuan, makanan tradisional Manado. Penelitian tentang profil dan aktivitas antioksidan dari daun Gedi telah dilakukan. Tujuan penelitian ini adalah mengevaluasi dan membandingkan profil dan aktivitas antioksidan dari daun gedi yang diekstraksi secara sekuensial dengan pelarut heksana, aseton dan metanol. Ekstrak daun gedi selanjutnya dianalisis kandungan total fenolik dan flavonoid, sedangkan aktivitas antioksidannya dilakukan secara in vitro meliputi penangkal radikal bebas DPPH, pengkelat logam dan penstabil oksigen singlet. Hasil penelitian menunjukkan bahwa ekstrak sekuensial heksanaaseton-metanol (ESHAM) memiliki total fenol dan total flavonoid yang tertinggi dibandingkan dengan ekstrak lainnya, masing-masing sebesar 10,67±0,49 mg GAE/g ekstrak dan 2,33±0,026 mg kuersetin/g ekstrak. ESHAM juga memiliki aktivitas antioksidan yang paling tinggi, dengan persentase penghambatan DPPH sebesar 67,47%; persen pengkelat logam sebesar 48,07% dan persen penghambatan oksigen singlet sebesar 38,66% pada konsentrasi 150 μg/mL esktrak. Kesimpulan senyawa fenolik pada daun gedi bersifat polar sehingga menghasilkan aktivitas antioksidan tertinggi pada pelarut polar.Kata kunci: Daun gedi, ekstraksi sekuensial, fenolik, flavonoid dan antioksidan ABSTRACT Gedi's leave is one of the raw material in tinutuan porridge, a traditional food from Manado Indonesia. The leaves was extracted by various solvent to dissolve all of the compound. The aim of this study was to compare the profile and antioxidant activities of the extract in various sequence of solvent. Hexane, aseton, and methanol were used to dissolve a non polar, semi polar and polar component, respectively. All of the extract were analysed for its antioxidant activities. The profile of extract were indicated by total phenol and total flavonoid meanwhile antioxidant activities was measured by radical scavenging activity DPPH, metal chelating and singlet oxygen quenching. The result indicated the sequence of hexane -aseton -methanol contain the highest of total phenol and flavonoid compare to the others with 10.67±0.49 mg GAE/g extract and 2.33±0.026 mg quersetin/g extract. The sequence also showed the highest of antioxidant activities at 150 μg/mL extract with 67.47%; 48.07% and 38.66% for percentage of inhibition DPPH, value of metal chelating and singlet oxygen, respectively.Keywords: Gedi's leave, sequencial extraction, phenolic, flavonoid and antioxidant PENDAHULUANKonsumsi buah dan sayuran dapat mencegah dan menurunkan resiko penyakit degeneratif seperti kanker dan jantung. Hal ini disebabkan adanya senyawa polifenol pada buah dan sayuran yang memiliki aktivitas biologi. Golongan senyawa polifenol paling banyak dijumpai pada sayuran adalah flavonoid. Aktivitas biologi flavonoid sebagai antioksidan dilaporkan dapat menghambat peroksidasi lipid, menangkal radikal bebas dan spesies oksigen aktif (ROS) serta mengkelat logam (Ammar dkk., 2009;Liu dan Zhu, 2007).Penyakit degeneratif yang diakibatkan...

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Extraction of flavonoids from flavonoid-rich parts in tartary buckwheat and identification of the main flavonoids

Cited by 73 publications

References 6 publications

Antioxidant Capacities and Total Quercetin Content of Several Species of Polygonaceae in Mongolia

Antioxidant Capacities and Total Quercetin Content of Several Species of Polygonaceae in Mongolia

Izhodišča za raziskave učinkov flavonoidov, taninov in skupnih beljakovin v frakcijah zrn navadne ajde (Fagopyrum esculentum Moench) in tatarske ajde (Fagopyrum tataricum Gaertn.) / Starting points for the study of the effects of flavonoids, tannins ...

EKSTRAKSI DAUN GEDI (Abelmoschus manihot L) SECARA SEKUENSIAL DAN AKTIVITAS ANTIOKSIDANNYA Antioxidant Activities of Sequentially Extracted Gedi’s (Abelmoschus manihot L) Leaves

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