Biochemical and molecular control of cold-induced sweetening in potatoes

Sowokinos, Joseph R.

doi:10.1007/bf02883548

Cited by 196 publications

(188 citation statements)

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“…Tubers of SMINIA793101-3 produced in autumn accumulated higher reducing sugars during storage at 4ºC and 25ºC ( Figure 4B). Storage temperatures lower than 6°C have been shown to decrease respiration rates, and increase the activity of enzymes responsible for the conversion of starch into reducing sugars in potato tuber, which results in high reducing sugar accumulation and dark color of potato chips (Coelho et al, 1999;Sowokinos, 2001;Chapper et al, 2004). However, the rate of starch depletion and soluble sugar accumulation depends upon storage temperature and cultivar, possibly owing to variation in enzyme activities (Kazami et al, 2000).…”

Section: Resultsmentioning

confidence: 99%

Processing quality of potato tubers produced during autumn and spring and stored at different temperatures

et al. 2012

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BISOGNIN DA. 2012. Processing quality of potato tubers produced during autumn and spring and stored at different temperatures. Horticultura Brasileira 30: 91-98. ABSTRACTThe objective of this work was to access processing quality of potato clones (Solanum tuberosum) Asterix, SMINIA793101-3, and Missaukee cultivated during spring and autumn growing seasons and stored at 4, 8, 12, or 25ºC. Clones grown in spring had shorter dormancy than clones grown in autumn. Potato tubers grown in spring and autumn and stored at 4ºC, as well as tubers grown in autumn and stored at 8ºC had no sprouting for six months. Among clones grown in autumn, the longest dormancy period during storage at 12ºC was observed in the clone SMINIA793101-3, and at 25ºC was in the clone Asterix. In potato tubers grown in spring, the longest dormancy period during storage at 8ºC was observed in the clones SMINIA793101-3 and Missaukee, at 12ºC was in the clone SMINIA793101-3, and at 25ºC was in the clones Asterix and Missaukee. Potato tubers grown in spring had higher dry matter, starch content, and respiration rates, and lower reducing sugar, and total polyphenol content. The only exception was the Missaukee that had similar dry matter content in both growing seasons. In general, storage at 4ºC and 8ºC were more effective in reducing respiration rates and maintaining higher dry mater content of potato tubers. Chip darkening, reducing sugars, and total polyphenol content increased during storage of potato tubers. Darker chip color, higher reducing sugars and polyphenol content were obtained during storage at temperatures of 4ºC and 8ºC. These results suggest that the best storage temperature depends on genotype, tuber physiological age, and growing conditions.

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Section: Resultsmentioning

confidence: 99%

Processing quality of potato tubers produced during autumn and spring and stored at different temperatures

et al. 2012

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“…Alta dose de N pode decrescer o teor de amido nos tubérculos de batata (Westermann et al, 1994;Shan et al, 2004), fato não observado nas quatro cultivares. Aumento na dose de N provocou decréscimo no nível de desintegração da batata assada (Hegney & McPharlin, 2000;Hejlová & Blahovec, 2007).…”

Section: Resultsunclassified

“…Em baixa temperatura ocorre acúmulo de adenosina tri-fosfato (ATP) no tubérculo, ativação da via alternativa e, simultaneamente, aumento nas concentrações de sacarose, substrato da invertase ácida no vacúolo que originará o acúmulo de açúcares redutores nos tubérculos (Duplessis et al, 1996). O acúmulo de açúcares redutores nos tubérculos armazenados sob refrigeração é um dos fatores limitantes na produção de batata frita de alta qualidade (Sowokinos, 2001). Isso decorrente da formação de produtos de coloração escura, resultado da reação entre o grupamento carbonila do açúcar redutor (glicose e frutose) e o grupo amino dos aminoácidos, conhecida como reação de Maillard (Richardson et al, 1990).…”

Section: Introductionunclassified

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Carboidratos e matéria seca de tubérculos de cultivares de batata influenciados por doses de nitrogênio

et al. 2010

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RESUMONeste trabalho, objetivou-se avaliar o efeito de doses de nitrogênio (N) sobre os teores de carboidratos (açúcares solúveis totais, açúcares redutores e amido), matéria seca e sólidos solúveis totais nos tubérculos de quatro cultivares de batata. Os tubérculos originaram-se de quatro experimentos, realizados simultaneamente no campo, no outono/inverno, na Universidade Federal de Viçosa. Em todos os experimentos, foi utilizado delineamento em blocos casualizados, com quatro repetições. Os tratamentos foram compostos de cinco doses de N (0, 50, 100, 200 e 300 kg ha -1 ) na forma de sulfato de amônio, aplicadas no plantio das cultivares Ágata, Asterix, Atlantic e Monalisa. Foram analisados os teores de matéria seca, açúcares solúveis totais, açúcares redutores, amido e sólidos solúveis totais nos tubérculos, após 30 dias de armazenamento a 5ºC a 80-85% de umidade relativa. Em todas as cultivares, as doses de N apresentaram efeito quadrático sobre o teor de sólidos solúveis totais e não houve efeito sobre os teores de matéria seca e de amido nos tubérculos de batata. Dependendo da cultivar, as doses de N influenciam positivamente, ou não influenciam os teores de açúcares redutores e açúcares solúveis totais nos tubérculos de batata. Termos para indexação:Solanum tuberosum L., adubação nitrogenada, qualidade de tubérculos, açúcares, amido, matéria seca. ABSTRACTThis study aimed to evaluate the effect of nitrogen (N) doses on carbohydrate (total soluble sugars, reducing sugars and starch), dry matter and total soluble solids contents in tuber of four potato cultivars. The tubers originated from four experiments, simultaneously conducted in the field, during fall/winter, at the Federal University of Viçosa. These experiments were set in randomized complete block and four repetitions and we evaluated the effects of five N rates (0, 50, 100, 200, and 300 kg ha -1 ) on Agata, Asterix, Atlantic and Monalisa cultivars. Dry matter, total soluble sugars, reducing sugars, starch, and total soluble solids contents of the tubers were analyzed after a 30-day storage at 5ºC. N rates presented quadratic effects on the total soluble solids and presented no effects on dry matter and starch contents for all cultivars. Depending on the cultivar, N rates had positive effects or did not affect reducing sugars and total soluble sugars contents in the tubers.Index terms: Solanum tuberosum L., fertilization, tuber quality, sugars, starch, dry matter. INTRODUÇÃOA batata (Solanum tuberosum L.) tem importância econômica entre as olerícolas e no mundo é o quarto cultivo alimentar mais importante depois do trigo, arroz e milho (Fontes & Pereira, 2005). Em 2008, a produção brasileira de batata foi de 3.636.419 toneladas, com área plantada de 144.400 hectares, atingindo produtividade de 25,18 t ha -1 . A produtividade mundial em 2007 foi de 16,65 t ha -1 (Agrianual, 2009). O mercado brasileiro é abastecido por cultivares originárias da Holanda, Alemanha e Canadá, como Ágata' Asterix, Atlantic, Monalisa, entre dezenas de outras.A batata é re...

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“…LTS, therefore, is a major concern to the potato processing industry. However, there are many advantages of storing processing tubers at low temperature which include less shrinkage and disease loss, control of sprouting, reduction/ elimination of the use of chemical sprout inhibitors and extended marketability (Wismer et al 1995;Sowokinos 2001;Blenkinsop et al 2004). An Environmental Protection Agency mandate (1996) within the requirements of the Food Quality Protection Act (FQPA) resulted in a reduction in allowable CIPC residue, a chemical sprout inhibitor on fresh potatoes in the USA from 50 ppm to 30 ppm.…”

Section: Introductionmentioning

confidence: 99%

Alleviation of low temperature sweetening in potato by expressing Arabidopsis pyruvate decarboxylase gene and stress-inducible rd29A: A preliminary study

Pinhero

Pazhekattu

Marangoni

et al. 2011

Physiol Mol Biol Plants

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The acceptability of potatoes for processing chips and French fries is largely dependent on the color of the finished product. Most potato cultivars and varieties stored at temperatures below 9-10°C are subjected to low temperature sweetening (LTS) which result in the production of bitter-tasting, dark colored chips and French fries which are unacceptable to consumers. However, storing tubers at low temperatures (i.e., <10°C) has many advantages such as lowered weight loss during storage, natural control of sprouting, and reduction/elimination of chemical sprout inhibitors. Our earlier research results on LTS suggested a role for pyruvate decarboxylase (PDC) in LTS-tolerance. In the present study, the role of PDC was examined whereby the potato variety Snowden was transformed with Arabidopsis cold-inducible pyruvate decarboxylase gene 1 (AtPDC1) under the control of promoter rd29A. Two transgenic plants were selected and storage studies were conducted on tubers harvested from one of the transgenic lines grown under green house conditions. Transgenic tubers showed higher Agtron chip color score indicating lighter chip and lower reducing sugar and sucrose concentrations compared to the untransformed tubers during the storage periods studied at 12°C and 5°C. These results suggest that overexpression of pyruvate decarboxylase gene resulted in low temperature sweetening tolerance in the transgenic Snowden.

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Biochemical and molecular control of cold-induced sweetening in potatoes

Cited by 196 publications

References 103 publications

Processing quality of potato tubers produced during autumn and spring and stored at different temperatures

Processing quality of potato tubers produced during autumn and spring and stored at different temperatures

Carboidratos e matéria seca de tubérculos de cultivares de batata influenciados por doses de nitrogênio

Alleviation of low temperature sweetening in potato by expressing Arabidopsis pyruvate decarboxylase gene and stress-inducible rd29A: A preliminary study

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