Tepary Bean Starch Part III: In vitro Digestibility

Abbas, I. R.; Scheerens, Joseph C.; Berry, J. W.

doi:10.1002/star.19870390807

Cited by 9 publications

(5 citation statements)

References 14 publications

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“…The reason for severe reduction in mean RS content of tepary bean could be attributed to the incubation step (at 50 o C overnight) during starch extraction procedure followed for cultivars with colored seed coat. It was supported by previous observations (Abbas et al, 1987) as the RS content decreases at increased temperatures during processing (> 37 o C). Tepary starch was sensitive to temperature which explains the relatively low amylose/amylopectin values in tepary and high content of hydrolysable starch (Tables 2, 3).…”

Section: Variability Among Cropssupporting

confidence: 78%

“…The present observations of reduced values of RS were supported by similar observation in teparybean (Abbas et al, 1987) and were due to differences in granule structure, crystallinity and amylose content and due to increased enzyme availability.…”

Section: Tepary Beansupporting

confidence: 77%

“…related health disorders and was proved to be the best choice for human consumption with high amylose content compared to amylopectin (FAO, 1998;Sajilata et al, 2006). Nutritional potential of tepary bean (Gonzalez de mejia et al, 1998) was revealed with high amount of protein (24.5%), minerals (Bhardwaj & Hamama, 2004), resistant starch (Abbas & Berry, 1986;Abbas et al, 1987), high levels of antioxidant enzymes (Turkan et al, 2004), and anti-cancerous properties (Valadez-vega et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Seed Protein and Starch Qualities of Drought Tolerant Pigeonpea and Native Tepary Beans

Narina¹,

Bhardwaj²,

Hamama³

et al. 2014

JAS

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Tepary bean and pigeonpea were highly drought tolerant food legumes and were profitable in arid regions with sustainable productivity. Protein and starch, major constituents of legume grain, were used in various forms for human and animal consumption. Therefore, present investigation was carried out with an objective to evaluate protein content and various factors influencing qualities of starch in pigeonpea and tepary bean. Significant differences (p < 0.05) were observed for protein and starch qualities among the two crops and between the drought responsive cultivars of these crops. The protein content of pigeon pea (22.5-26.2 mg/100 mg) was high compared to tepary bean (17 to 26 mg/100 mg) seed. The resistant starch content of pure starch extracted from drought responsive cultivars varied from 1.09 (TB #7) to 8.75 (TB #31) in teparybean and 14.68% (G2) -21.35 % (W1) in pigeonpea. Amylose content of pigeonpea varied from 7.76 to 12.31% and the degree of crystallinity were 13.42 -19.30% with X-ray diffraction pattern of the C-type. The pigeonpea starch granules were large, oval to ellipsoidal shape with a smooth surface and mean granule size of 47.6 µm in length X 36.4 µm in width. The transition temperatures and enthalpy of gelatinization ranged from 67.25-68. ) on an average. In both crops, the gelatinization showed significant correlation with amylose content, crystallinity and granule size. Pigeonpea grain was superior with quality starch and protein with adequate amounts of digestible fiber without any reduction in quality during extraction of starch compared to tepary bean. Black seed coated tepary had lowest gelatinization energy compared to brown and white. The drought tolerant cultivars identified in teparybean (TB #24) and Pigeonpea (W1) with high resistant starch and protein content will be useful in selection for crop production, developing homozygous line for industrial use in southern USA.

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Section: Variability Among Cropssupporting

confidence: 78%

Section: Tepary Beansupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seed Protein and Starch Qualities of Drought Tolerant Pigeonpea and Native Tepary Beans

Narina¹,

Bhardwaj²,

Hamama³

et al. 2014

JAS

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“…The raw tepary starch was more resistant to hydrolysis (by α-amylase) than maize starch due to differences in granules structure and amylose content [12]. The starch from cooked tepary bean (Phaseolus acutifolius A.…”

Section: Introductionmentioning

confidence: 99%

“…The starch from cooked tepary bean (Phaseolus acutifolius A. Gray) was more hydrolyzed compared to its raw starch [12]. Therefore, based on the dependence of variable "resistant starch" on genotype and temperature, we planned to perform RS analysis of the ground pigeonpea seed powders of four cultivars from two planting times during third and second week of May and June, respectively.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cultivar and Planting Time on Resistant Starch Accumulation in Pigeonpea Grown in Virginia

Narina

Hamama

et al. 2012

ISRN Agronomy

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Recent recognition of indigestible starch component named as "Resistant Starch" in the human small intestine raised our interest to execute the current study to identify the best cultivar to produce high-quality pigeonpea seed to incorporate in ongoing pigeonpea breeding program. Though pigeonpea was identified as one of the food legumes with high RS, there were no published reports for pigeonpea resistant starch accumulation as influenced by planting time. The experiment was conducted twice in replicated block design with four varieties and two planting times. The resistant and non resistant (hydrolysable) starch components of ground seed powder of four pigeonpea varieties were analyzed to identify the best planting time and best cultivar for high-resistance starch accumulation. Planting time and varieties showed significant influence on resistant starch (RS), total starch (TS), and hydrolysable starch (HS) accumulation. The pigeonpea variety W1 was significantly superior from other three varieties and has highest RS value (21.4 g/100 g) with 70 per cent RS out of its total starch (28 g/100 g). The planting time 2 (June 11) produced seed with highest values for RS (18.7 g/100 g), HS (6.5 g/100 g), and TS (25.2 g/100 g). The cultivar W1 is the better one followed by GA1 for use in further crop improvement.

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In vitro Digestibility of Cereal and Legume (Phaseolus vulgaris) Starches by Bovine, Porcine and Human Pancreatic α‐Amylases Effect of Dietary Fiber

1989

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The effect of heat treatment and dietary fiber from whole and dehulled black bean (Phaseolus vulgaris) seeds on digestibility of various starches by bovine, porcine and human pancreatic a-amylases was studied. Corn, rice, wheat and black bean starch digestibility increased after heating. The degree of hydrolysis of black bean starch ranged between 56 and 83% of the values obtained for cereal starches depending on the enzyme used. Enzyme activity was: human-> porcine > bovine regardless of the substrate employed. Dietary fiber decreased starch digestibility by porcine enzyme. This effect was more marked when whole grain fiber was used. Black bean and rice starch digestibility by human amylase was not affected by fiber, while corn and wheat starch hydrolysis was slightly inhibited. The use of the human enzyme is recomended for in uitro amylolysis assays. Attention is called on the difficulties of extrapolating results obtained with animal enzymes to humans. In vitro-Verdaulichkeit von Getreide-und Leguminosen-(Phaseolus vulgaris)-Starken durch Rinder-, Schweine-undMenschen-Pankreas-a-Amylasen. Der EinfluR der Rohfaser. Der EinfluR von Hitzebehandlung und Rohfaser aus ganzen und geschalten Schwarzbohnen-(Phaseolus vulgaris)-Samen auf die Verdaulichkeit verschiedener Starken durch Rinder-, Schweine-und Menschen-Pankreas-a-Amylasen wurde untersucht . Die Verdaulichkeit von Mais-, Reis-, Weizen-und Schwarzbohnenstarke war nach der Erhitzung erhoht. Der Hydrolysegrad der Schwarzbohnenstarke lag zwischen 56 und 83% der fur Getreidestarken in Abhangigkeit von dem verwendeten Enzym erhaltenen Werte. Die Enzymaktivitat war: Mensch > Schwein > Rind, unabhanig von dem eingesetzten Substrat. Dieser Effekt wurde deutlicher, wenn Ganzkornfaser verwendet wurde. Die Verdaulichkeit von Schwarzbohnen-und Reisstarke durch menschliche Amylase wurde durch Faser nicht beeintrachtigt, wahrend die Hydrolyse von Mais-und Weizenstarke gering inhibiert wurde. Die Verwendung von menschlichem Enzym wird fur die in vim-Amylolyse-Versuche empfohlen. Auf die Schwierigkeiten der Extrapolierung von mit tierischen Enzymen erhaltenen Ergebnissen auf menschliche Enzyme wird aufmerksam gemacht .

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Tepary Bean Starch Part III: In vitro Digestibility

Cited by 9 publications

References 14 publications

Seed Protein and Starch Qualities of Drought Tolerant Pigeonpea and Native Tepary Beans

Seed Protein and Starch Qualities of Drought Tolerant Pigeonpea and Native Tepary Beans

Effect of Cultivar and Planting Time on Resistant Starch Accumulation in Pigeonpea Grown in Virginia

In vitro Digestibility of Cereal and Legume (Phaseolus vulgaris) Starches by Bovine, Porcine and Human Pancreatic α‐Amylases Effect of Dietary Fiber

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