scholarly journals Food Metabolites as Tools for Authentication, Processing, and Nutritive Value Assessment

Foods ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 2213
Author(s):  
Mariana C. Pedrosa ◽  
Laíres Lima ◽  
Sandrina Heleno ◽  
Márcio Carocho ◽  
Isabel C. F. R. Ferreira ◽  
...  
Keyword(s):  
Analytical Chemistry ◽  
Quality Control ◽  
Secondary Metabolites ◽  
Nutritional Value ◽  
Control Parameter ◽  
Nutritive Value ◽  
Value Assessment ◽  
Food Fraud ◽  
Food Adulteration ◽  
Metabolite Detection

Secondary metabolites are molecules with unlimited applications that have been gaining importance in various industries and studied from many angles. They are mainly used for their bioactive capabilities, but due to the improvement of sensibility in analytical chemistry, they are also used for authentication and as a quality control parameter for foods, further allowing to help avoid food adulteration and food fraud, as well as helping understand the nutritional value of foods. This manuscript covers the examples of secondary metabolites that have been used as qualitative and authentication molecules in foods, from production, through processing and along their shelf-life. Furthermore, perspectives of analytical chemistry and their contribution to metabolite detection and general perspectives of metabolomics are also discussed.

scholarly journals Nutritive value of sugarcane silages with different bacterial additives and fermentation periods

2020 ◽  
Vol 21 ◽  
Author(s):  
Ivone Rodrigues da Silva ◽  
Francirose Shigaki ◽  
Rosane Cláudia Rodrigues ◽  
Ana Paula Ribeiro Jesus ◽  
Clésio dos Santos Costa ◽  
...  
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Nutritional Value ◽  
Nutritive Value ◽  
Soluble Fraction ◽  
B Value ◽  
Neutral Detergent Fiber ◽  
Acid Detergent Fiber ◽  
Fermentation Period

ABSTRACT The objective of this study was to evaluate the nutritive value of sugarcane silage with or without inoculation with P. acidipropionici or L. buchneri, over three fermentation periods. The experimental design was completely randomized in a 3 x 3 inoculant by fermentation period factorial arrangement (without inoculant, inoculant 1, inoculant 2; x three fermentation periods, 10, 60, 90 days). Values of pH, dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose (HEM) and lignin were determined and in situ DM degradability profiles were modelled for parameters a, b and c, potential degradation (A) and effective degradability (ED). The 90 day fermentation yielded a lower pH for both inoculants. There was an interaction between inoculant and fermentation period (P < 0.05) for DM content, with a reduction in silage DM without the additive at 90 days. The CP, HEM, ADF and lignin contents of sugarcane were not influenced by the treatments. The addition of P. acidipropionici provided the lowest NDF content at 10 days and presented a higher fraction a, potential degradation and ED. At 60 days, there was no variation in soluble fraction, the control silage showed a higher fraction b, higher potential degradation and ED. At 90 days of fermentation, L. buchneri silages presented a higher fraction a, degradation rate and DE and a higher b value was obtained in the silage without inoculant. Inoculants are effective in maintaining the silage DM content and nutritional value during prolonged fermentation periods.

Enantioselective effects of imazethapyr on the secondary metabolites and nutritional value of wheat seedlings

2021 ◽  
Vol 757 ◽  
pp. 143759
Author(s):  
Manxin Bao ◽  
Jun Li ◽  
Hui Chen ◽  
Zunwei Chen ◽  
Dongmei Xu ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Nutritional Value ◽  
Wheat Seedlings

Automation and Quality in Analytical Laboratories

1994 ◽  
Vol 77 (3) ◽  
pp. 785-789
Author(s):  
Miguel Valcárcel ◽  
Angel Ríos
Keyword(s):  
Analytical Chemistry ◽  
Quality Control ◽  
Chemical Analysis ◽  
Analytical Control ◽  
Systems Quality ◽  
Quality Of Products ◽  
Analytical Laboratories

Abstract After a brief introduction to the generic aspects of automation in analytical laboratories, the different approaches to quality in analytical chemistry are presented and discussed to establish the following different facets emerging from the combination of quality and automation: automated analytical control of quality of products and systems; quality control of automated chemical analysis; and improvement of capital (accuracy and representativeness), basic (sensitivity, precision, and selectivity), and complementary (rapidity, cost, and personnel factors) analytical features. Several examples are presented to demonstrate the importance of this marriage of convenience in present and future analytical chemistry.

scholarly journals Assessment of Algerian Maize Populations for Saccharification and Nutritive Value

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 646 ◽  
Author(s):  
Ana López-Malvar ◽  
Abderahmane Djemel ◽  
Leonardo Gomez ◽  
Rogelio Santiago ◽  
Pedro Revilla
Keyword(s):  
Nutritional Value ◽  
Nutritive Value ◽  
Agronomic Traits ◽  
Agronomic Performance ◽  
Maize Populations ◽  
Algerian Sahara ◽  
Drought Conditions ◽  
Grain Starch ◽  
Saccharification Yield ◽  
And Control

Maize (Zea mays L.) from the Algerian Sahara was adapted to arid conditions and has been used for food and feed. The objective of this work was to assess the potential value of Saharan maize for saccharification and nutritive value under drought conditions. Eighteen maize populations from the Algerian Sahara were evaluated under drought and control conditions and representative samples of those populations were taken for nutrients and saccharification analyses. The evaluation of saccharification was made in one Spanish trial under drought and control conditions. Differences among Algerian populations for nutritive value were significant for starch and ash, but not for lipids and proteins. Drought-reduced saccharification yield and differences among populations were significant for saccharification potential under drought conditions, and for saccharification yield under both drought and control conditions. The Algerian populations PI527465 and PI542689 had high grain starch and low ash, PI527469 and PI527474 had a balanced nutritional value, and PI527475 and PI542683 had low grain starch and moderately high ash. Besides high nutritional value, the drought-tolerant population PI542683 had high saccharification under drought conditions. Most agronomic traits had no significant effects on saccharification, and some grain nutrients affected saccharification and agronomic performance. Therefore, improving the nutritive value of grain and saccharification of stover, while maintaining agronomic performance, could be feasible, attending to the weak interactions between them.

Atorvastatin: A Review of Analytical Methods for Pharmaceutical Quality Control and Monitoring

2019 ◽  
Vol 102 (3) ◽  
pp. 801-809
Author(s):  
Ana Carolina Kogawa ◽  
Ana Elisa Della Torre Pires ◽  
Hérida Regina Nunes Salgado
Keyword(s):  
Analytical Chemistry ◽  
Quality Control ◽  
Analytical Methods ◽  
Pharmaceutical Products ◽  
Point Of View ◽  
Human Consciousness ◽  
Pharmaceutical Samples ◽  
Pharmaceutical Quality ◽  
The Impact

Abstract Background: Atorvastatin, a lipid-regulating drug, was the best-selling drug in the world in the early 2000s. Thus, monitoring of this drug is important because it is accessible to a large portion of the population. In addition, its quality control is fundamental to provide quality medicines. Method of analysis can be the first step in the rational use of pharmaceuticals. Objective/Methods: In this context, a critical review of analytical methods present in the literature and official compendia for the pharmaceutical quality control of atorvastatin was made. Results: Among the analytical methods most used in the evaluation of atorvastatin, HPLC is highlighted, followed by HPLC coupled to MS, and spectrophotometry in UV. Tablets are the most studied pharmaceutical samples, and plasma is the most studied biological matrix. In the literature, studies with atorvastatin-based pharmaceutical products are more common than biological materials. Acetonitrile is the organic solvent most commonly used in the methods surveyed to evaluate atorvastatin. Conclusions: Currently, awareness of the impact that the analytical choice has on the health of the operator and the environment is growing. Therefore, the suitability of existing methods for the determination of atorvastatin can be made to adhere to the current analytical chemistry. In this way, the analytical, environmental, and human consciousness will remain united. Highlights: Although the literature shows interesting methods from an economic and environmental point of view, such as UV, Vis miniaturized, and TLC, they can still be improved to meet the requirements of the current sustainable analytical chemistry.

Sign in / Sign up

Export Citation Format

Share Document