Changes in Alkaoids Content of Some Selected Nigerian Vegetables during Processing

Odufuwa, Odufuwa

doi:10.9790/0853-0615154

Cited by 5 publications

(4 citation statements)

References 13 publications

(15 reference statements)

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“…Pyridine was the most concentrated alkaloid subgroup. The total alkaloid content of fluted pumpkin grown in varying proportion of NPK was higher compared to other works (Onyeka and Nwambekwe, 2007;Odufuwa et al, 2013;Otitoju et al, 2014). The highest total flavonoid was obtained in M 125 NPK growth media.…”

Section: Discussioncontrasting

confidence: 58%

Anti-nutrient composition of fluted pumpkin leaf grown in different NPK solutions

Agogbua,

Okonwu,

Akonye

et al. 2022

J. Agric. Sci. Pract.

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The study evaluated the anti-nutrient composition of fluted pumpkin, Telfairia occidentalis Hooker fil. leaf grown in different NPK 20-10-10 hydroponic solutions. The solutions varied in the amount of NPK (20-10-10) granules (25, 50, 75, 100g, 125 and 150 g) dissolved in water containing micronutrients. The growth media were designated as: M25NPK, M50NPK, M75NPK, M100NPK, M125NPK, M150NPK, and Control. Two-week old seedlings of fluted pumpkin raised using River-sand were transferred into the growth media in four replicates. The hydrogen cyanide, oxalate, phytate, tannin, saponin, trypsin-inhibitor, alkaloid, and flavonoids were determined 5 weeks after planting following standard procedures. Waters 616/626 HPLC was used to determine alkaloid and flavonoid contents. The result showed that the proportion of phytochemicals in the leaves among the growth media range thus: phytate (3.445 – 15.837%), tannin (0.729 – 1.974%), oxalate (3.279 – 8.882%), trypsin-inhibitor (1.018 – 2.756%), saponin (6.075 – 7.558%) and hydrogen cyanide (0.014 – 0.020 ppm). Higher values of phytochemical in the leaves were recorded at M100NPK growth media (for tannin, oxalate, saponin and trypsin-inhibitor). The most abundant group of alkaloids present in the leaves was pyridine with percentage occurrence with respect to the total alkaloids across the growth media as thus: 35.72% (Control), 32.36% (M25NPK), 16.80% (M50NPK), 60.83% (M75NPK), 34.68% (M100NPK), 38.69% (M125NPK), and 61.28% (M150NPK). The most abundant flavonoid was luteolin (9.153 g/100g) followed by eriodictyol (7.573 g/100g) at M50NPK medium, while the lowest value (0.004 g/100g) was epicatechin and anthocyanine at M150NPK and M125NPK media, in that order. The study revealed that appropriate proportion of NPK 20-10-10 in solution could be used in growing fluted pumpkin.

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Section: Discussioncontrasting

confidence: 58%

Anti-nutrient composition of fluted pumpkin leaf grown in different NPK solutions

Agogbua,

Okonwu,

Akonye

et al. 2022

J. Agric. Sci. Pract.

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“…All the alkaloids in T. occidentalis varied in the different growth medium. The total alkaloids (11.614 g/100g NM, 9.082 g/100g HS) obtained in T. occidentalis using HPLC was higher compared to other works (Onyeka and Nwambekwe, 2007;Otitoju et al, 2014;Odufuwa et al, 2013), which reported 0.81 g/100g, 0.04 g/100g and 0.039 g/100g, respectively for total alkaloids in T. occidentalis. Also, Oduse et al (2012) reported 13.83 mg/kg for Cnidoscolus aconitifloina and 10.13 mg/kg for Vernonia amygdalina.…”

Section: Resultscontrasting

confidence: 38%

Phytochemical Profile of Telfairia occidentalis Leaf Grown in Soilless and Soil Media using HPLC

Okonwu¹

2017

JAS

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The phytochemical components of Telfairia occidentalis Hook F. leaf grown in soil (HS) and soilless (NM) media were assessed using High Performance Liquid Chromatography (HPLC). The media used for the soil medium and soilless medium were humus soil and hydroponic solution, respectively. White-sand from the river was used to raise the seedlings before transferring into hydroponic solution. The plants were allowed to grow for a month for both HS and NM. The phytochemicals assessed were hydrogen cyanide, phytate, saponin, tannin, trypsin inhibitor, flavonoids and alkaloids. Standard procedures were followed in the analyses. The assessed phytochemicals for T. occidentalis revealed the following: phytate (9.774 ppm; 8.857 ppm), tannin (2.546 ppm; 2.127 ppm), oxalate (5.897 ppm; 5.927 ppm), saponin (6.829 ppm; 7.253 ppm), trypsin-inhibitor (1.290 ppm; 2.584 ppm), total flavonoids (10.019 g/100g; 8.064 g/100g), and total alkaloids (11.614 g/100g; 9.082 g/100g) for NM and HS media, respectively. Hydrogen cyanide content of T. occidentalis (0.001 ppm) was the same in both NM and HS. The phytochemical profile of T. occidentalis leaf varied in both media. Hydroponically grown T. occidentalis leaf had higher concentration of phytochemicals when compared to orthodox use of soil for cultivation of vegetable.

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“…While the juicing is believed to concentrate the nutrients, thus, the chromium content which may also be concentrated possibly to the level that might affect the consumer adversely [12,14]. In view of the above, we set to investigate the content of chromiumin fresh vegetables and how its level is affected by juicing.…”

Section: Introductionmentioning

confidence: 99%

“…In the past consumption of fresh (unprocessed) vegetable was uncommon, but of recent the use of vegetable juice such as Telfairia occidentalis (probably for hemopoetic value) and Vernonia amygdalina (probably for antidiabetic and other therapeutic purpose) is on increase among Nigerian populace [14]. While the juicing is believed to concentrate the nutrients, thus, the chromium content which may also be concentrated possibly to the level that might affect the consumer adversely [12,14].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Chromium Composition of Commonly Consumed Leafy Vegetables Juice Selected from South West Nigeria

Odufuwa¹

2015

JFNS

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Abstract:Chromium is necessary for insulin function, nutrient uptake and regulation of major metabolism as well as boosting of immune system amongst others; available in vegetables, the cheapest source for the majority of people living in developing countries. Seven commonly consumed vegetables in south west Nigeria were collected from four major markets in the region, thoroughly mixed and prepared for laboratory analysis. Each vegetables were shared into two groups (fresh and juice) and four replicates each, chromium content were determined using Atomic Absorbance Spectrophotometer. Highest chromium content was observed in Senecio biafrae (4.73±0.05) and it is significantly (p<0.05) higher than other experimented samples while, the least was observed in Piper guineense (0.89±0.30) and is significantly (p<0.05) lower than other fresh leafy vegetables. Among the juice extracts Senecio biafrae (29.80±2.11) contain the highest chromium content and significant difference (p>0.05) while, Corchorus oliterus (10.90±0.50) is significantly (p<0.05) lower than other vegetables. Comparatively, chromium content in juice extracts are significantly higher than their corresponding fresh vegetables. Therefore caution most be applied when juice of vegetables are to be ingested especially in Piper guineense which displayed a significantly increase chromium content when juiced.

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Changes in Alkaoids Content of Some Selected Nigerian Vegetables during Processing

Abstract: Alkaloids, natural

Cited by 5 publications

References 13 publications

Anti-nutrient composition of fluted pumpkin leaf grown in different NPK solutions

Anti-nutrient composition of fluted pumpkin leaf grown in different NPK solutions

Phytochemical Profile of Telfairia occidentalis Leaf Grown in Soilless and Soil Media using HPLC

Evaluation of Chromium Composition of Commonly Consumed Leafy Vegetables Juice Selected from South West Nigeria

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