The effect of environmental conditions on the chemical composition of soybean seeds: Deactivation of trypsin inhibitor and effect of microwave on some components of soybean seeds

Sakla, Alfy Badie; Ghali, Y.; El-Farra, A.; Rizk, Laila F.

doi:10.1016/0308-8146(88)90041-6

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…Observouse que existe correlação negativa entre os conteú-dos de óleo e proteína (r=-0,47). Resultados semelhantes foram obtidos por Costa et al (1973/74), Sakla et al (1988) e Mandarino et al (1992). Com exceção da cultivar EMBRAPA-4, a soma desses componentes manteve-se dentro dos limites de 62 ± 0,5%.…”

Section: Resultsunclassified

Composição centesimal e conteúdo de aminoácidos, ácidos graxos e minerais de seis cultivares de soja destinadas à alimentação humana

Vieira

Cabral

Paula

1999

Pesq. agropec. bras.

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Iguaçu e IAS-5, destinadas à alimentação humana, foram caracterizadas quanto à composição centesimal, conteúdo de aminoácidos, ácidos graxos e minerais. Os teores de fibra, proteína e óleo variaram significativamente nas amostras analisadas, enquanto que os teores de cinzas não apresentaram diferenças significativas. Com relação aos teores de minerais, o potássio foi o que obteve o maior valor, 1.824,02 mg/100 g para a cultivar Iguaçu, ficando a EMBRAPA-4 com o maior teor de cálcio, 313,93 mg/100 g. Para a composição em ácidos graxos, notou-se que a cultivar IAS-5 apresentou o maior teor de insaturados, 87,45%, enquanto que a Davis, o menor, 83,93%. A cultivar EMBRAPA-4 apresentou um teor de ácido oléico maior e de linoléico e linolênico bem menores que as demais cultivares estudadas, 39,93%, 42,46% e 4,64%, respectivamente. Os demais ácidos graxos estão de acordo com os valores encontrados na literatura no tocante a óleo de soja. Todas as cultivares estudadas apresentaram excelente balanço em aminoácidos essenciais (AAE). Os teores de cada AAE foram superiores aos da proteína padrão estabelecido pela FAO/WHO, com valor total de AAE variando de 39,5 a 45,0 g/100 g de proteína.Termos para indexação: Glycine max, caracterização química, proteína, óleo, cinzas. PROXIMATE COMPOSITION AND AMINO ACID, FATTY ACID AND MINERAL CONTENTS OF SIX SOYBEAN CULTIVARS FOR HUMAN CONSUMPTIONABSTRACT -Six soybean cultivars (Glycine max L. Merrill): IAS-4, EMBRAPA-4, Davis, BR-16, Iguaçu and IAS-5, for human consumption were characterized regarding their proximate composition and amino acid, fatty acids and mineral contents. Significant differences were observed among these varieties concerning their contents of protein, oil and fiber. However, their ash content did not show significant differences. Regarding the mineral composition, the cultivars Iguaçu and EMBRAPA-4 presented, respectively, the highest levels of potassium (1824.02 mg/100 g) and calcium (313.93 mg/100 g). It was observed that the cultivar IAS-5 presented the highest level of unsaturated fatty acids (87.45%), while the cultivar Davis, the lowest one (83.93%). The cultivar EMBRAPA-4 presented the highest level of oleic acid and levels of linoleic and linolenic acids lower than the ones obtained for the other studied cultivars (39.93%, 42.46% and 4.64%, respectively). The results obtained for the other fatty acids levels are in agreement with the ones reported for soybean oil in the literature. All six cultivars studied presented an excellent balance of essential amino acids (EAA). The contents of each EAA were higher than those presented in the reference pattern established by FAO/WHO with the total EAA ranging from 39.5 to 45.0 g/100 g of protein.

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Section: Resultsunclassified

Composição centesimal e conteúdo de aminoácidos, ácidos graxos e minerais de seis cultivares de soja destinadas à alimentação humana

Vieira

Cabral

Paula

1999

Pesq. agropec. bras.

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“…In order to improve the nutritional quality of pigeonpea for both human and animal consumption, the levels of these protease inhibitors must be reduced. Heat-processing (cooking by moist heat or microwave) of the seeds was shown to help denature most of these proteins in soybeans (Sakla et al 1988;DiPietro and Liener 1989). However, it is also possible to eliminate or reduce these inhibitors by transferring the null or low-expressing alleles of these inhibitors (natural variants) to the cultivated strains through breeding.…”

Section: Discussionmentioning

confidence: 99%

Genetic variation of trypsin and chymotrypsin inhibitors in pigeonpea [Cajanus cajan (L.) Millsp.] and its wild relatives

Kollipara

Singh

Hymowitz

1994

Theoret. Appl. Genetics

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Variation in the trypsin inhibitors (TIs) and the chymotrypsin inhibitors (CIs) among 69 pigeonpea [Cajanus cajan (L.) Millsp.] strains from a wide geographical distribution and among 17 accessions representing seven wild Cajanus species was studied by electrophoretic banding pattern comparisons and by spectrophotometric activity assays. The TI and CI electrophoretic migration patterns among the pigeonpea strains were highly uniform but varied in the inhibitor band intensities. The migration patterns of the inhibitors in the wild Cajanus species were highly species specific. The mean TI activity of pigeonpea strains (2279 units) was significantly higher than that of the wild Cajanus species (1407 units). However, the mean CI activity in the pigeonpea strains (62 units) was much lower than that in the wild species (162 units). Kenya 2 and ICP 9151 were the lowest and the highest, respectively, in both the TI and CI activities among all the pigeonpea strains used in this study. A highly-significant positive correlation was observed between the TI and CI activities. The Bowman-Birk type inhibitors with both TI and CI activities were identified in all the pigeonpea strains and also in the accessions of all the wild species except C. volubilis (Blanco) Blanco. The C. volubilis accession ICPW 169 was found to be 'null' for both CI bands and CI activity. Environment, strain, and environment x strain interaction showed highly-significant effects on both the TI and CI activities. Growing the pigeonpea strains at a different environment from their area of adaptation increased TI and CI activities and also altered the maturity period.

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“…Storage materials of seeds may vary temporally and spatially with the environmental conditions experienced by the mother plant (Oluwatosin, 1997;Soriano et al, 2011;Xu et al, 2016). For example, Dornbos and Mullen (1992) found that drought and high temperature increased protein content and decreased oil content of soybean; Sakla et al (1988) found that soybean from lower altitude had higher content of carbohydrates and lower protein content; Wardlaw and Dunstone (1984) suggested that drought and low temperature induced seeds to accumulate soluble sugar. Here, altitude had an indistinct impact on C content but displayed significant positive effects on the contents of N and P, but especially on the variation of P content.…”

Section: Altitude Correlationsmentioning

confidence: 99%

The evolutionary correlation associated with seed mass and altitude on nutrient allocation of seeds

Zhang

Zhao

et al. 2019

Seed Sci. Res.

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Seed reserves play vital roles in seed germination and seedling growth and their variation may be related to various environment factors, plant traits and phylogenetic history. Here, the evolutionary correlation associated with seed mass and altitude and carbon (C), nitrogen (N) and phosphorus (P) allocation of seeds among 253 alpine herbaceous plants was tested. In this study, phylogeny had strong limitations on nutrient allocation of seeds across species, and species from younger phylogenetic groups tended to have higher N and P contents, which might be considered as the evolutionary selection of seed plants. Higher seed N and P content would help seedlings to gain more survival chance and stronger competitive capacity, and their progeny would be more likely to be preserved. When phylogeny was considered, altitude only had a significant positive effect on P content, but the negative effects on seed mass were all expressed. The independent effects of altitude and seed mass suggest that the nutrient allocation of seeds might be affected by both environment and plant traits. In addition, altitude and seed mass displayed partial overlapping effects on nutrient allocation of seeds. The negative effects of seed mass were affected slightly by altitude, whereas altitude only had a significant positive effect on P content when seed mass was controlled. Above all, seed P content showed obvious and general correlations with seed mass, altitude and age of clade, which indicated that higher seed P content might be an adaptive selection of species associated with growth and survival of progeny.

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The effect of environmental conditions on the chemical composition of soybean seeds: Deactivation of trypsin inhibitor and effect of microwave on some components of soybean seeds

Cited by 8 publications

References 12 publications

Composição centesimal e conteúdo de aminoácidos, ácidos graxos e minerais de seis cultivares de soja destinadas à alimentação humana

Composição centesimal e conteúdo de aminoácidos, ácidos graxos e minerais de seis cultivares de soja destinadas à alimentação humana

Genetic variation of trypsin and chymotrypsin inhibitors in pigeonpea [Cajanus cajan (L.) Millsp.] and its wild relatives

The evolutionary correlation associated with seed mass and altitude on nutrient allocation of seeds

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