Effects of transitory water stress on potato tuber stem-end reducing sugar and fry color

The increased demand for potato by the Brazilian processing industry requires long term refrigerated storage, but after a few months, natural dormancy ends, and sprouts start to grow. Thus, sprout inhibitors are necessary to reduce the rate of growth and allow further storage. The purpose of research described here was to determine the effects clove and menthol essential oils have on the inhibition of sprout growth in non-dormant ‘Asterix’ tubers. Both eugenol and menthol treatments reduced the rate of sprout growth during storage at 8oC for up to 50 days. Eugenol and menthol essential oils diminished the rate of accumulation of reducing sugar, which are responsible for browning of French fries. Color after frying was within acceptable levels when the tubers were treated with eugenol or menthol essential oils.

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Effects of ethylene and 1-methylcyclopropene on potato tuber sprout control and fry color

American Journal of Potato Research ◽

10.1007/bf02853649 ◽

2005 ◽

Vol 82 (2) ◽

pp. 123-128 ◽

Cited By ~ 26

Author(s):

Robert K. Prange ◽

Barbara J. Daniels-Lake ◽

Jin-Cheol Jeong ◽

Michael Binns

Keyword(s):

Potato Tuber ◽

Fry Color

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The effect of timed water stress on quality, total solids and reducing sugar content of potatoes

American Potato Journal ◽

10.1007/bf02849311 ◽

1993 ◽

Vol 70 (3) ◽

pp. 227-241 ◽

Cited By ~ 37

Author(s):

Clinton C. Shock ◽

Zoe Ann Holmes ◽

Tim D. Stieber ◽

Eric P. Eldredge ◽

Peifang Zhang

Keyword(s):

Water Stress ◽

Sugar Content ◽

Reducing Sugar ◽

Total Solids

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Potato tuber stem-end fry color determination

American Potato Journal ◽

10.1007/bf02849111 ◽

1994 ◽

Vol 71 (2) ◽

pp. 77-88 ◽

Cited By ~ 4

Author(s):

Clinton C. Shock ◽

Tim D. Stieber ◽

James C. Zalewski ◽

Eric P. Eldredge ◽

Michael D. Lewis

Keyword(s):

Potato Tuber ◽

Color Determination ◽

Fry Color

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Role of tobacco vacuolar invertase regulated by patatin promoter in potato tuber resistance to cold sweetening

Chinese Journal of Agricultural Biotechnology ◽

10.1017/s1479236207001313 ◽

2007 ◽

Vol 4 (1) ◽

pp. 81-86 ◽

Cited By ~ 3

Author(s):

Cheng Shan-Han ◽

Liu Jun ◽

Xie Cong-Hua ◽

Song Bo-Tao ◽

Li Jing-Cai

Keyword(s):

Nicotiana Tabacum ◽

Potato Tuber ◽

Reducing Sugar ◽

Potato Tubers ◽

Vacuolar Invertase ◽

Low Temperature Storage ◽

Patatin Promoter ◽

Promoter Class ◽

Transgenic Lines

AbstractTo slow down the accumulation of reducing sugar in potato tubers exposed to low-temperature storage, an expression vector, pBICNI, including Nt-VIF (Nicotiana tabacum vacuolar inhibitor of beta fructosidase, a vacuolar invertase inhibitor from Nicotiana tabacum) gene regulated by potato tuber specific promoter class I patatin promoter (CIPP) was constructed and transformed into potato (Solanum tuberosum L.) cultivar E-potato 3 (E3). Detection by polymerase chain reaction (PCR), Northern and Southern hybridizations indicated that the full-length Nt-VIF cDNA was transformed successfully into cv. E3. After storing potato tubers of 14 transgenic lines at 4 or 20°C for 30 days, their activities of vacuolar invertase (VI) and reducing sugar (RS) content were analysed. The results showed that there were no significant differences in RS content between transgenic and untransformed (control) tubers stored at 20°C. However, RS content of transgenic lines was obviously reduced at 4°C compared to the control, from 34.0% (line B-13) to 76.8% reduction (line B-1), implying that VI activity was inhibited by Nt-VIF cDNA expression and RS content was reduced. Further analysis revealed a positive linear relationship between VI activity and RS content (VI=0.308RS+0.067), and lines B-1, B-2, B-6, B-9 and B-14 could meet the requirements of potato chips in terms of their low RS content after cold storage.

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The Correlation between Soil Nutrient and Potato Quality in Loess Plateau of China Based on PLSR

Sustainability ◽

10.3390/su12041588 ◽

2020 ◽

Vol 12 (4) ◽

pp. 1588 ◽

Cited By ~ 1

Author(s):

Yingying Xing ◽

Xiaoli Niu ◽

Ning Wang ◽

Wenting Jiang ◽

Yaguang Gao ◽

...

Keyword(s):

Potato Tuber ◽

Loess Plateau ◽

Nitrate Nitrogen ◽

Ph Value ◽

Sugar Content ◽

Soil Nutrient ◽

Reducing Sugar ◽

Tuber Quality ◽

Soil Nitrate ◽

Potato Quality

Potato tuber quality is influenced by the interaction of soil nutrients. Hence, simple correlation analysis cannot accurately reflect the true relationship between soil nutrients and potato tuber quality. In this study, potato tuber quality and soil nutrient content were used as research materials in the Loess Plateau of China. The partial least square regression (PLSR) method was used to establish the regression equation between potato quality and soil nutrient. The major soil nutrient indexes influencing potato quality were screened out to provide theoretical basis for potato field management. The results showed that the major soil nutrient factors influencing the potato tuber quality in Loess Plateau were soil ammonium nitrogen, soil nitrate nitrogen, soil available phosphorus, pH, and soil available potassium. Soil pH value is the most important factor affecting potato starch, reducing sugar content, and soluble protein content. Soil nitrate nitrogen is one of the important factors affecting potato tuber soluble total sugar content, vitamin C, browning intensity, and polyphenol oxidase activity. Soil ammonium nitrogen was positively correlated with the total soluble sugar content of potato tubers, and negatively correlated with reducing sugar content, browning intensity, and polyphenol oxidase activity. However, soil available potassium has positive effects on potato starch and reducing sugar content, and negative effects on soluble protein and browning strength. Results of this study indicates that the major soil nutrient factors influencing potato tuber quality were soil nitrate nitrogen and soil pH value.

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Amelioration of drought stress in black matpe bean (Vigna mungo L.) by foliar application of potassiu

Indian Journal of Agricultural Research ◽

10.18805/ijare.a-5173 ◽

2019 ◽

Author(s):

Rajnish Kumar ◽

Swati Shahi ◽

Malvika Srivastava

Keyword(s):

Water Stress ◽

Water Deficit ◽

Foliar Application ◽

Sugar Content ◽

Reducing Sugar ◽

Water Deficit Stress ◽

Ameliorative Effect ◽

Four Levels ◽

Physiological And Biochemical

Growth, physiological and biochemical activities of black matpe bean grown in pot cultures were evaluated to recognize the ameliorative role of potassium against the deleterious effects of water deficit. Black matpe plants were subjected to four levels of water stress (400 ml, 200 ml, 100 ml and 50 ml). The control plants were supplied with 500 ml of water at regular intervals. Potassium was applied in form of 200 ppm KCl and KNO3. Plants were under observation starting from 25 upto 55 days of plant growth at 10-day interval for each treatment. Water deficit stress reduced biomass, leaf area and RWC and provoked oxidative stress in plants as confirmed by considerable increase in electrolyte leakage, proline and reducing sugar content. Foliar application of KCl and KNO3 improved all these attributes under water stress. The ameliorative effect might be maintained through decrease in proline and increase in reducing sugar content. Increased reducing sugar content in K treated plants may have a significant role in osmotic adjustment.

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