Potential food uses for protein from tropical and subtropical plant leaves

Nagy, Steven; Telek, Lehel; Hall, Nancy T.; Berry, Robert E.

doi:10.1021/jf60219a028

Cited by 36 publications

(24 citation statements)

References 40 publications

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“…Values from 5 up to 20% on a dry mass basis are common and may be even higher in some tropical plants (Nagy et al, 1978). Consequently, research has focused especially on the extraction from leafy material.…”

Section: Protein Extractionmentioning

confidence: 99%

“…In particular, proteins are present at variable concentrations according to the particular biomass and may reach values of 30% in the leaves of some species of plants (Nagy et al, 1978). Protein extraction from dry lignocellulosic feedstocks has started receiving attention only recently, often with the goal of producing high quality animal feed.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Protein extraction from biomass in a bioethanol refinery – Possible dietary applications: Use as animal feed and potential extension to human consumption

Chiesa

Gnansounou

2011

Bioresource Technology

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Section: Protein Extractionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Protein extraction from biomass in a bioethanol refinery – Possible dietary applications: Use as animal feed and potential extension to human consumption

Chiesa

Gnansounou

2011

Bioresource Technology

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“…Pelegrine and Gasparetto (2005); Pirie (1971) and Jaenicke and Zavodszky (1990) reported that high solubility negatively affect extractability as protein denatured under extreme basic condition (pH of 11-12). Pelegrine and Gasparetto (2005) and Nagy et al (1978) found the optimum range of pH for pulping to be in the range of 8-8.5, within which the solubility of nitrogen was 70-80%.…”

Section: Discussionmentioning

confidence: 99%

Nutrient Composition of Dandelions and Its Potential as Human Food

Ghaly

Mahmoud

Dave³

2012

American Journal of Biochemistry and Biotechnology

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Two thirds of the world's populations are suffering from protein malnutrition and about 36 million people die every year due to hunger. Expansion of present agriculture practices into marginal land is not expected to solve the problem of increasing the food supply. New methods of feeding the ever increasing world population must be developed. The aim of the study was to evaluate the usefulness of the dandelion leaves as a source of supplemental protein. Protein was extracted from the dandelion leaves by blending them after pH and moisture adjustment, squeezing the resultant pulp through filter press and coagulating the filtrate with acid and heat. The effects of pH, moisture content, pressure and temperature on the extractability and quality of protein were investigated. A mass balance was performed on dry matter and protein contents during the extraction steps. Proximate analysis was performed on the extracted leaf protein and the amino acid profile of the protein curd was determined. The best results of the protein dissolution during the blending step were obtained at pH of 8.25 and moisture content of 96%. Firm protein curd with light green chalky color was obtained at 3.5 pH and 80°C. The protein content of dandelion leaves was 4.70% while the protein content of the curd was 15.93% on wet basis and 55.43% on a dry basis. The best leaf protein could be obtained from the young leaves in good conditions. The results showed that dandelion leaves offer a good source of supplementary protein compared to vegetable and fruits. The amino acid composition of dandelion protein seems to be better than most seed proteins and compares favorably with animal proteins. The protein cake at a pH of 4 had the keeping quality of cheese. Drying the protein cake did not impair the nutritional value but made it hard, dry and gritty. The non extractable protein remained in the fibre and liquor; both have economic values as feed for ruminants and growth medium for microorganisms, respectively.

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“…2 B: lanes c -d and e -f, respectively). Membrane proteins are known to aggregate between 50 and 64°C, while soluble proteins aggregate a higher temperature (80 -82°C) (Nagy et al, 1978). We therefore assumed that the heat treatment did not affect the type of precipitated proteins, but just increased the final protein yield (about 50% more protein was recovered from the heated juice).…”

Section: Protein Characterisationmentioning

confidence: 99%

“…After leaf pressing, the juice is centrifuged at low speed (200 g) and the resulting supernatant was heated at 50°C, followed by a second centrifugation step at higher speed (15,000 g). The subsequent heating step at 50°C causes the aggregation of the insoluble proteins (Nagy et al, 1978). The protein aggregates are then recovered by a second centrifugation step at higher speed.…”

Section: Routes For Process Optimisationmentioning

confidence: 99%

Sugar beet leaves for functional ingredients

Tenorio¹

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Potential food uses for protein from tropical and subtropical plant leaves

Cited by 36 publications

References 40 publications

Protein extraction from biomass in a bioethanol refinery – Possible dietary applications: Use as animal feed and potential extension to human consumption

Protein extraction from biomass in a bioethanol refinery – Possible dietary applications: Use as animal feed and potential extension to human consumption

Nutrient Composition of Dandelions and Its Potential as Human Food

Sugar beet leaves for functional ingredients

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