Japanese Sweetpotatoes: Production, Cultivars, and Possible Ancestry

Tsutsui, Sakio; Shiga, Yoshihiko; Mikami, Tetsuo

doi:10.15835/nbha.44.1.10400

Cited by 2 publications

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“…The former was named after Toka Toka Peak near Dargaville in New Zealand and released to the local industry in 1972, while the later was introduced from the United States and released to New Zealand in 1993 . The two varieties Kokei and Koganesengan (Kogan) with Japanese origins were released in 1945 and 1946, and were cultivated in New Zealand around 1980s . Purple Dawn (PD) and Orange Sunset (OS) were two new varieties released from Plant & Food Research since 2014.…”

Section: Methodsmentioning

confidence: 99%

Physicochemical and functional properties of sweetpotato flour

Cui

Zhu

2019

J Sci Food Agric

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BACKGROUND Sweetpotato (Ipomoea batatas Lam.) is a major starchy crop with great agricultural significance in many countries. There is a need to assess more genetic resources for sweetpotato quality improvement. This study aims to analyze physicochemical properties of whole (unpeeled) root flours from seven New Zealand sweetpotato varieties with commercial significance. Using whole unpeeled plants for ‘healthy’ food formulations becomes more popular due to nutritional effects and environmental concerns. RESULTS Great variations were found in chemical composition, in vitro antioxidant activities, swelling power, water solubility index, in vitro digestibility, thermal, pasting and gel textural properties of the seven flours. The antioxidant activities and phenolic contents were higher in the color‐fleshed samples. Correlation analysis showed that the swelling, pasting and texture properties were largely affected by the activity of the endogenous amylase. Principal component analysis was done in four aspects including chemical composition, mineral content, antioxidant activities and functional properties to analyze the similarity and difference among these seven sweetpotato varieties. CONCLUSION The seven sweetpotato flours showed a wide range of functionalities and will be useful for the formulations of diverse and ‘healthy’ sweetpotato‐based products. © 2019 Society of Chemical Industry

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Section: Methodsmentioning

confidence: 99%

Physicochemical and functional properties of sweetpotato flour

Cui

Zhu

2019

J Sci Food Agric

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“…The vines are forming a dense canopy, purple in color and vigorous. Tubers are fusiform, lightly grooved, with an attractive purple‐red skin and yellow flesh 24 . In Turkey, an adaptation study revealed that this plant can be grown with high yield values in the Mediterranean region of Turkey 14…”

Section: Methodsmentioning

confidence: 99%

Effects of water deficit on growth and performance of drip irrigated sweet potato varieties

2020

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BACKGROUND There are many scientific studies on performance of different sweet potato varieties under water deficits, however, no study on Koganesengan and Beniazuma varieties has been found in the literature. This study was aimed to investigate the effects of water deficit levels (control‐WD0, low‐WD25, medium‐WD50 and high‐WD75 water deficit levels) on growth, yield and quality parameters, water use efficiency and water‐yield response factor values of these sweet potato varieties under drip irrigation. RESULTS The seasonal water consumptions of varieties were calculated as 808 and 826 mm, respectively, under no water deficit. All of the growth (except average tuber length for Koganesengan) and yield parameters of both varieties were significantly affected by water deficit treatments. However, most of the quality parameters including total dry mater, starch, ß‐carotene, ascorbic acid, protein, saccharose and glucose contents for both varieties; total ash, crude fiber and phenolic matter content for Beniazuma; and fructose content and antioxidant activity for Koganesengan variety had no response to water deficits at any level. Under high deficit and control, fresh and dry vine, tuber and total yields ranged from 4.80 to 14.54, 0.85 to 2.35, 1.59 to 10.97 and 6.40 to 25.52 t ha−1 for Koganesengan and 6.05 to 27.88, 0.99 to 4.09, 2.17 to 22.91 and 8.22 to 50.79 t ha−1 for Beniazuma, respectively. CONCLUSION The results showed that Beniazuma variety is proportionally more sensitive to water deficit than Koganesengan. It can be concluded that both varieties can be grown in Mediterranean conditions by providing optimum irrigation applications. © 2020 Society of Chemical Industry

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Japanese Sweetpotatoes: Production, Cultivars, and Possible Ancestry

Cited by 2 publications

References 0 publications

Physicochemical and functional properties of sweetpotato flour

Physicochemical and functional properties of sweetpotato flour

Effects of water deficit on growth and performance of drip irrigated sweet potato varieties

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