Studies on Amylase Activity of γ-Irradiated Groundnut seeds during Germination

1964 ◽  
Vol 19 (11) ◽  
pp. 1017-1020 ◽  
Author(s):  
G. M. Patel ◽  
K. C. Patel
Keyword(s):  
Ascorbic Acid ◽  
Gamma Radiation ◽  
Amylase Activity ◽  
Inhibitory Effect ◽  
Maximum Value

Amylase activity of groundnut with reference to gamma radiation in the range of 10 to 120 Kr units and the period of germination has been discussed. Dry seeds contain little amylase activity. Amylase activity is found to increase with period of germination and after reaching a maximum value it once again decreases. Radiation has inhibitory effect on the activity. Amylase activity is newly formed during sprouting of seeds. Ascorbic acid produced during germination of these seeds also inhibits the amylase activity.

Inhibitory Effect of Ascorbic Acid 2-O-.ALPHA.-Glucoside on the Pigmentation of Skin by Exposure to Ultraviolet Light.

1996 ◽  
Vol 58 (3) ◽  
pp. 439-443 ◽  
Author(s):  
Eriko MIYAI ◽  
Itaru YAMAMOTO ◽  
Jun-ichi AKIYAMA ◽  
Mitsuhiro YANAGIDA
Keyword(s):  
Ascorbic Acid ◽  
Ultraviolet Light ◽  
Inhibitory Effect

scholarly journals Inhibitory effect of the Ascorbic Acid on photodegradation of pharmaceuticals compounds exposed to UV-B radiation

2021 ◽  
pp. 100035
Author(s):  
Consuelo León ◽  
Claudio Henríquez ◽  
Nicolás López ◽  
Georgina Sanchez ◽  
Bárbara Pastén ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Inhibitory Effect

scholarly journals Iron absorption from a cereal-based meal containing cane sugar fortified with ascorbic acid

1977 ◽  
Vol 38 (2) ◽  
pp. 261-269 ◽  
Author(s):  
D. Derman ◽  
M. Sayers ◽  
S. R. Lynch ◽  
R. W. Charlton ◽  
T. H. Bothwell ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Ferric Hydroxide ◽  
Fold Increase ◽  
Inhibitory Effect ◽  
Cane Sugar ◽  
Iron Nutrition ◽  
Indian Women ◽  
Mean Values ◽  
Maize Meal ◽  
The Mean

1. The feasibility of improving iron nutrition by fortifying cane sugar with ascorbic acid was studied.2. The absorption of Fe added to maize-weal porridge was measured in 116 volunteer multiparous Indian women using the radio-Fe erythrocyte utilization method. The meals were fed with and without tea or coffee and with and without varying amounts of ascorbic acid.3. The mean absorption of Fe from maize-meal porridge was very low (3.8 %), being even further reduced (2.1 %) when tea was drunk with the meal.4. The addition of 50 or 100 mg ascorbic acid to maize-meal porridge caused approximately a 10-fold increase in Fe absorption. The increase was much less when tea was present, being 2-fold and 5-fold with 50 and 100 mg ascorbic acid respectively. The inhibitory effect of tea on Fe absorption could, however, be overcome by giving larger doses of ascorbic acid (250 and 500 mg).5. When contaminating Fe (2.5 mg) in the form of labelled rust (Fe2O3) or ferric hydroxide was added to maize-meal porridge it was poorly absorbed (mean values were 0.01 % and 1.5 % respectively). The addition of 100 mg ascorbic acid increased the mean Fe absorption rates to 0.5 % and 6.7 % with Fe2O3 and Fe(OH)3 respectively. Fe(OH)3 was found to be absorbed about half as well as the intrinsic Fe present in maize-meal porridge.6. It is concluded that ascorbic acid is capable of improving Fe absorption from a cereal source. It can partially overcome the inhibitory effect of tea and might be expected to facilitate the absorption of at least some forms of Fe that may contaminate food.

scholarly journals Inhibitory effect of high leucine concentration on α-amylase secretion by pancreatic acinar cells: possible key factor of proteasome

2018 ◽  
Vol 38 (6) ◽  
Author(s):  
Long Guo ◽  
Baolong Liu ◽  
Chen Zheng ◽  
Hanxun Bai ◽  
Hao Ren ◽  
...  
Keyword(s):  
Amylase Activity ◽  
Acinar Cells ◽  
Inhibitory Effect ◽  
Proteasome Activity ◽  
Pancreatic Acinar Cells ◽  
Amylase Secretion ◽  
High Concentration ◽  
Amylase Release ◽  
Cholecystokinin Receptor ◽  
Key Factor

The present study aimed to investigate whether leucine affects the pancreatic exocrine by controlling the antisecretory factor (AF) and cholecystokinin receptor (CCKR) expression as well as the proteasome activity in pancreatic acinar cells of dairy calves. The pancreatic acinar cells were isolated from newborn Holstein bull calves and cultured using the Dulbecco’s modified Eagle’s medium/nutrient mixture F12 Ham’s liquid (DMEM/F12). There were six treatments of leucine dosage including 0 (control), 0.23, 0.45, 1.35, 4.05, and 12.15 mM, respectively. After culture for 3 h, the samples were collected for subsequent analysis. As the leucine concentration increased from 0 to 1.35 mM, the α-amylase activity in media decreased significantly (P<0.05), while further increase in leucine concentration did not show any decrease in α-amylase activity. Addition of leucine inhibited (P<0.05) the expression of AF and CCKR, and decreased the activity of proteasome (P<0.05) by 76%, 63%, 24%, 7%, and 9%, respectively. Correlation analysis results showed α-amylase secretion was negatively correlated with leucine concentration (P<0.01), and positively correlated with proteasome activity (P<0.01) and the expression of CCK1R (P<0.01) and AF (P<0.05). The biggest regression coefficient was showed between α-amylase activity and proteasome (0.7699, P<0.001). After inhibition of proteasome by MG-132, low dosage leucine decreased (P<0.05) the activity of proteasome and α-amylase, as well as the expression of CCK1R. In conclusion, we demonstrated that the high-concentration leucine induced decrease in α-amylase release was mainly by decreasing proteasome activity.

scholarly journals Enhancing or Inhibitory Effect of Fruit or Vegetable Bioactive Compound on Aspergillus niger and A. oryzae

2021 ◽  
Vol 8 (1) ◽  
pp. 12
Author(s):  
Gülru Bulkan ◽  
Sitaresmi Sitaresmi ◽  
Gerarda Tania Yudhanti ◽  
Ria Millati ◽  
Rachma Wikandari ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Aspergillus Niger ◽  
Bioactive Compounds ◽  
Ellagic Acid ◽  
Microbial Growth ◽  
Biomass Yield ◽  
Antimicrobial Effect ◽  
Bioactive Compound ◽  
Inhibitory Effect ◽  
Processing Wastes

Fruit and vegetable processing wastes are global challenges but also suitable sources with a variety of nutrients for different fermentative products using bacteria, yeast or fungi. The interaction of microorganisms with bioactive compounds in fruit waste can have inhibitory or enhancing effect on microbial growth. In this study, the antimicrobial effect of 10 bioactive compounds, including octanol, ellagic acid, (−)-epicatechin, quercetin, betanin, ascorbic acid, limonene, hexanal, car-3-ene, and myrcene in the range of 0–240 mg/L on filamentous fungi Aspergillus oryzae and Aspergillus niger were investigated. These fungi were both found to be resistant to all compounds except octanol, which can be used as a natural antifungal agent, specifically against A. oryzae and A. niger contamination. On the contrary, polyphenols (quercetin and ellagic acid), ascorbic acid, and hexanal enhanced A. niger biomass yield 28%, 7.8%, 16%, and 6%, respectively. Furthermore, 240 mg/L car-3-ene was found to increase A. oryzae biomass yield 8%, while a 9% decrease was observed at lower concentration, 24 mg/L. Similarly, up to 17% decrease of biomass yield was observed from betanin and myrcene. The resistant nature of the fungi against FPW bioactive compounds shows the potential of these fungi for further application in waste valorization.

scholarly journals Evaluation of Cherry Tomato Genotypes for Qualitative Traits under Open Field and Protected Condition

2020 ◽  
pp. 9-16
Author(s):  
. Chandni ◽  
Deepti Singh ◽  
Shirin Akhtar ◽  
Shiv Shankar Mahesh
Keyword(s):  
Ascorbic Acid ◽  
Open Field ◽  
Ascorbic Acid Content ◽  
Quality Parameters ◽  
Soluble Solids ◽  
Vegetable Crops ◽  
Cherry Tomato ◽  
Total Soluble Solids ◽  
Maximum Value ◽  
Β Carotene

Vegetable, due to higher neutraceutical component, are termed as protective food against various major and minor diseases. Scientific agro-techniques under optimum growing condition like temperature, relative humidity and light intensity, positively influence the qualitative and quantitative attributes of most of the vegetable crops including cherry tomato. It is one of potential vegetable crop, which is extensively utilized for table purpose and for preparing recipies in five star restaurants. Cherry tomato fetches higher prices in market due to good taste and higher nutrients, thus making qualitative attributes as an important factor to give higher returns to the farmers. Thus, this experiment was conducted to estimate the qualitative attributes in eighteen genotypes of cherry tomato grown under both open field and polyhouse conditions. The result of the study revealed that under open field condition, BRCT-30 was the best genotype with maximum value for lycopene content (6.62 mg 100-1 g FW) and β-carotene (2.30 mg 100-1 g FW), second maximum value for total soluble solids (7.85°Brix), third maximum value for reducing sugar and fourth highest position for ascorbic acid content (43.65 mg/100 g FW). Under polyhouse condition, the best genotype for quality parameters was BRCT-36 with maximum total soluble solids (10.81°Brix), lycopene (7.48 mg 100-1 g FW) and β-carotene (2.49 mg 100-1g FW) along with average range of values for ascorbic acid (72.36 mg 100-1 g FW) and titrable acidity (0.55 mg 100-1 g FW).

scholarly journals Inhibitory Effect of Ascorbic Acid on β-Amylase

1953 ◽  
Vol 27 (11) ◽  
pp. 762-766
Author(s):  
Masaharu ITÔ ◽  
Michio ABE
Keyword(s):  
Ascorbic Acid ◽  
Inhibitory Effect

scholarly journals Dietary ascorbic acid lowers the concentration of soluble copper in the small intestinal lumen of rats

1994 ◽  
Vol 71 (5) ◽  
pp. 701-707 ◽  
Author(s):  
G. J. Van Den Berg ◽  
S. YU ◽  
A. G. Lemmens ◽  
A. C. Beynen
Keyword(s):  
Ascorbic Acid ◽  
Small Intestine ◽  
Liquid Phase ◽  
Inhibitory Effect ◽  
Male Rats ◽  
Intestinal Lumen ◽  
Distal Intestine ◽  
Small Intestinal ◽  
Ascorbic Acid Supplementation

We tested the hypothesis that ascorbic acid in the diet of rats lowers the concentration of soluble Cu in the small intestine, causing a decrease in apparent Cu absorption. Male rats were fed on diets adequate in Cu (5 mg Cu/kg) without or with 10 g ascorbic acid/kg. The diet with ascorbic acid was fed for either 6 or 42 d. Ascorbic acid depressed tissue Cu concentrations after a feeding period of 42, but not after 6 d. Dietary ascorbic acid lowered apparent Cu absorption after 6, but not after 42 d. The lowering of tissue Cu concentrations after long-term ascorbic acid feeding may have increased the efficiency of Cu absorption, and thus counteracted the inhibitory effect of ascorbic acid. Dietary ascorbic acid caused a significant decrease in the Cu concentrations in the liquid phase of both the proximal and distal parts of the small intestinal lumen. This effect was due to both a decrease in the amount of Cu in the liquid digesta and an increase in the volume of the liquid phase; only the latter effect for the distal intestine was statistically significant. We conclude that ascorbic acid supplementation lowers Cu absorption by decreasing the concentration of soluble Cu in the small intestine.

scholarly journals Inhibitory effect of a weight-loss Chinese herbal formula RCM-107 on pancreatic α-amylase activity: Enzymatic and in silico approaches

PLoS ONE ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. e0231815 ◽  
Author(s):  
Shiqi Luo ◽  
George Binh Lenon ◽  
Harsharn Gill ◽  
Andrew Hung ◽  
Daniel A. Dias ◽  
...  
Keyword(s):  
Weight Loss ◽  
In Silico ◽  
Amylase Activity ◽  
Inhibitory Effect ◽  
Herbal Formula ◽  
Chinese Herbal Formula ◽  
Chinese Herbal
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