The objective of this study was to evaluate the nutritional composition of the red alga Rodhymenia howeana. Tests performed: proximal analysis determined according to AOAC, mineral content by atomic absorption spectroscopy, amino acid count by cation exchange chromatography using an amino acid analyzer, vitamin C content and total phenols by spectrophotometry. The most important results of the proximal analysis were 28.56% of protein; 21.08% ash and traces of ethereal extract (lipids) in dry sample. Of the mineral content: iron 502 mg / kg and zinc 18.54 mg / kg of dry sample of algae. The most abundant essential amino acids (mg / 100 g of dry sample) were: valine 95, leucine 116 and lysine 116.2 and among the non-essential ones relevant: alanine 139, aspartic acid 244 and glutamic acid 313. Of the antioxidant components the content of vitamin C was 1.12 mg in 100 g of dry sample and of ...

The aim of the research was to evaluate the content of the bioactives compounds in purple corn cob (Zea mays L.) of three differents regions of Peru. The samples were obtained in Lima, Cajamarca and Abancay and the total polyphenols, flavonoids, anthocyanins and cyanidin-3-glucoside content were determined. The extracts were obtained with etanol to 20 %, pH 2, in a ratio of corn cob: solvent 1:100 (p/v) at a temperature of 70 °C for 30 minutes. The results of total anthocyanins were between 24,4 to 42,6 mg/g, the total polyphenols were in the range 67,9 to 94,1 µg/mg expressed as gallic acid equivalent (GAE) and the flavonoids between 3,1 to 4,4 µg/mg expressed as quercetin equivalent (QE). The cyanidin3-glucoside content varied in the range from 9,5 to 18,5 mg/g and was determined by high performance liquid chromatography (HPLC). There are significant differences in the content of th...

The aim of the present study is to obtain a protein concentrate from fresh artichoke heart and to determine the amount and quality of protein present. For this reason we employed different extractions in order to obtain acidic, aqueous and alcoholic concentrates with three different alcoholic values, obtaining 13,41g/100g yield of eatable protein with the 86% alcoholic extract, deterrnined by Kjeldahl method, The extracted samples were analyzed by PAGE - SDS electrophoresis, Laemmli method using a 12,5% polyacrilamide concentration, and we found it contained a reduced number of protein bands (between 8 and 10), being the most abundant the ones with Molecular Mass of 24 000, 29 000 and 36 000 Daltons,The amino acid content of lyophilized artichoke heart in the 86% alcoholic concentrate was deterrnined by HPLC, finding that the limiting amino acids were lysine and leucine, being valine and...

The aim of the present study is to obtain a protein concentrate from fresh artichoke heart and to determine the amount and quality of protein present. For this reason we employed different extractions in order to obtain acidic, aqueous and alcoholic concentrates with three different alcoholic values, obtaining 13,41g/100g yield of eatable protein with the 86% alcoholic extract, deterrnined by Kjeldahl method, The extracted samples were analyzed by PAGE - SDS electrophoresis, Laemmli method using a 12,5% polyacrilamide concentration, and we found it contained a reduced number of protein bands (between 8 and 10), being the most abundant the ones with Molecular Mass of 24 000, 29 000 and 36 000 Daltons,The amino acid content of lyophilized artichoke heart in the 86% alcoholic concentrate was deterrnined by HPLC, finding that the limiting amino acids were lysine and leucine, being valine and...

OBJECTIVE: To assess the vitamin E protective effects against free radicals generation, as it is involved in atheroma plate formation. MATERIAL AND METHODS: We used adult Sprague-Dawley rats as experimental models during three months, arranged into four groups: 1) Control diet group; 2) Control diet plus vitamin E (500 mg/Kg of food) group; 3) cholesterol-rich diet (3%) plus vitamin E group, and 4) cholesterol-rich diet group. Lipid profile and lipid peroxidation were measured both in serum and aortic tissue. RESULTS: The cholesterol-rich diet caused a significant increase (p <0,05) in serum triglycerides, and total and LDL cholesterol levels and a significant decrease in HDL cholesterol (p <0,005) levels despite vitamin E (12 mg/day) supplementation. Group IV showed a significant increase (p <0,005) in lipid peroxidation in serum and aortic tissue. CONCLUSIONS: Vitamin E provid...