Assessment of biochemical and antioxidant diversities in a shallot germplasm collection from Vietnam and its surrounding countries

Vu, Quynh Hoa; Hang, Tran Thi Minh; Yaguchi, Shigenori; Ono, Yasunori; Pham, Thi Minh Phuong; Yamauchi, Naoki; Shigyo, Masayoshi

doi:10.1007/s10722-012-9920-9

Cited by 18 publications

(17 citation statements)

References 37 publications

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“…Furthermore, in our previous report, we proved that 75-80% of shallot dry matter consisted of carbohydrates with a high level of sugars (Rabinowitch and Kamenetsky, 2002). Moreover, the fructan content represented 33-83% of the total sugars (Vu et al, 2013). In general, bulb onions accumulated high levels of monosaccharaides, along with low levels of sulfur compounds and flavonoids, resulting in a mild and sweet taste.…”

Section: Discussionmentioning

confidence: 63%

“…The method of flavonoid extraction was applied as described by Vu et al (2013). A 500-μL sample and 500 μL of 100% hexane were mixed in the Eppendorf and then incubated until the mixture separated into two parts.…”

Section: Extraction and Determination Of Total Flavonoid Contentmentioning

confidence: 99%

“…The method of sugar extraction adopted was the same as that described by Vu et al (2013). The obtained extract was filtered using a 0.45-μm syringe filter (DISMIC ® -13 HP ADVANTEC; Toyo Roshi Kaisha, Ltd.) before being analyzed using a Shimadzu Solusi LC (CBM-20A) HPLC machine equipped with an RI detector (Shimadzu, Kyoto, Japan), an LC-20AD pump (Shimadzu, 3.5 MPa Max 18.0 Min 0.0), and a Shimadzu SIL-20AC autosampler.…”

Section: Extraction and Determination Of Sugar Contentmentioning

confidence: 99%

“…The fructan content was determined using the thiobarbituric acid method (Percheron, 1962) from a 70% ethanol extract. Preparations for fructan analysis were carried out as described by Vu et al (2013). Fructan quantification was achieved using a spectrophotometer (U-2001; HITACHI High-Technologies Corporation) at a 432-nm wavelength.…”

Section: Extraction and Determination Of Sugar Contentmentioning

confidence: 99%

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Comparative Study on Phytochemical Variations in Japanese F<sub>1</sub> Varieties of Bulb Onions and South-East Asian Shallot Landraces

et al. 2018

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Wide-ranging varieties and/or strains of bulb onions (Allium cepa Common onion group) and shallots (A. cepa Aggregatum group) were utilized to understand the variation in chemical compounds responsible for their taste. The bulb samples of 10 F 1 commercial onion varieties (seven short-day and three long-day varieties) from Japan and 12 shallot landraces from abroad (Vietnam: three landraces; Indonesia: nine landraces) were collected as plant materials once a year in 2014 and 2015. The contents of S-alk(en)yl-L-cysteine sulfoxides, total flavonoids, and soluble sugars-including fructose, glucose, sucrose, and fructans-were determined to find differences between bulb onions and shallots, as well as to detect variations among varieties and/or landraces. While a principal component analysis (PCA) based on the results from both 2014 and 2015 could clearly discriminate shallots from bulb onions from a phytochemical perspective, bulb onions mainly had higher monosaccharides than shallots. By contrast, shallots produced more disaccharides than bulb onions. In most cases, regression analyses using the numerical data of the chemical compounds found in bulb onions and shallots suggested year-year correlations between 2014 and 2015. The flavonoid and PeCSO (S-(1-propenyl)-Lcysteine sulfoxide: isoalliin) contents in shallots were higher than those detected in bulb onions, which indicated the stronger pungent and bitter taste could be attributable to excess amounts of these compounds in this tropical plant.

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Section: Discussionmentioning

confidence: 63%

Section: Extraction and Determination Of Total Flavonoid Contentmentioning

confidence: 99%

Section: Extraction and Determination Of Sugar Contentmentioning

confidence: 99%

Section: Extraction and Determination Of Sugar Contentmentioning

confidence: 99%

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Comparative Study on Phytochemical Variations in Japanese F<sub>1</sub> Varieties of Bulb Onions and South-East Asian Shallot Landraces

et al. 2018

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“…To analyze the ACSOs, two grams of the leaf-blade tissues were microwaved for 2 min to denature the alliinase and extracted with distilled water. The flavonoid and ACSO contents were determined using HPLC according to the method described by Vu et al (2013). …”

Section: Characterization Of Alien Chromosomes Using Isozyme and Dna mentioning

confidence: 99%

Production and characterization of alien chromosome addition lines in Allium fistulosum carrying extra chromosomes of Allium roylei using molecular and cytogenetic analyses

et al. 2015

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Characteristics of chemical components in genetic resources of garlic Allium sativum collected from all over the world

Hirata

Abdelrahman

Yamauchi

et al. 2015

Genet Resour Crop Evol

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Assessment of biochemical and antioxidant diversities in a shallot germplasm collection from Vietnam and its surrounding countries

Cited by 18 publications

References 37 publications

Comparative Study on Phytochemical Variations in Japanese F<sub>1</sub> Varieties of Bulb Onions and South-East Asian Shallot Landraces

Comparative Study on Phytochemical Variations in Japanese F<sub>1</sub> Varieties of Bulb Onions and South-East Asian Shallot Landraces

Production and characterization of alien chromosome addition lines in Allium fistulosum carrying extra chromosomes of Allium roylei using molecular and cytogenetic analyses

Characteristics of chemical components in genetic resources of garlic Allium sativum collected from all over the world

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