Day3

  • Jomo Kenyatta University of Agriculture & Technology, Kenya
  • Title:Compliance of Maize Flour Brands to Food Fortification Standards in Kenya
  • Time :

Abstract:

In Kenya, micronutrient deficiencies remain a public health challenge with deficiencies in iron, vitamin A, folate, and zinc reported. Food fortification is a cost-effective intervention to reduce micronutrient deficiencies with the potential to reach a large population. Fortification of packaged maize flour in Kenya is mandatory as per the law passed in 2012. In order to assess fortification compliance, regular market surveillance is necessary. The objective of this work was to determine the level of compliance of commercially milled maize flour brands in Kenya to national set food fortification standards.
Five hundred and ninety seven (597) maize flour samples representing diverse brands were randomly collected from 10 counties and sorted to remove duplicate samples with similar batch numbers yielding 312 analytical samples. The samples were analyzed to determine zinc and iron content using Atomic Absorption Spectroscopy. Vitamins were determined using HPLC by isocratic elution for vitamin A and gradient elution for the B vitamins. Compliance is indicated by samples that meet the national food fortification standards for any two micronutrients among iron, zinc and vitamin A.
From the analysis, 33.3%, 33.9% and 29.9% of the samples complied with national fortification standard for iron, zinc, and vitamin A, respectively. The compliance levels for the B vitamins ranged from 9.7% for folic acid to 84.4% for vitamin B1. Overall, compliance to the national food fortification standards was 28% for all the maize flour samples. We conclude that the flours had low compliance levels to the national food fortification standards for maize flour despite the spirited efforts by both government and the private sector players. This scenario is worrying as it indicates that consumers are not getting the desired nutritional benefits from food fortification.

Biography:

Francis Aila is currently a PhD student in Food Science and Nutrition specializing in Food Fortification with a focus on bioavailability of minerals from fortified foods. He has over 15 years in the field of nutrition having worked with the ministry of health, Kenya. He has publications in food safety in peer reviewed journals from his MSc work and nutrition programming from his work at the ministry of health. He has participated in conferences focusing on health and nutrition in Africa.

  • Research Center for Fine Chemistry Srl, Italy
  • Title:A Mass Spectrometry and 1H NMR Study of Hypoglycemic and Antioxidant Principles from a Castanea sativa Tannin Employed in Oenology
  • Time :

Abstract:

The ethanol extract of the commercial tannin Tan’Activ C, (from Castanea sativa wood), employed in oenology, was subjected to chromatography on XAD-16 affording fractions X1–X5, evaluated for total phenols content (GAE), antioxidant activity (DPPH, ORAC), and hypoglycemic activity (α-glucosidase inhibition). Fraction X3 showed GAE, radical scavenging activity, and α-glucosidase inhibition higher than those of the Castanea sativa extract, and was subjected to chromatography on Sephadex LH-20 to obtain fractions S1–S7, analyzed by HPLC/ESI-MS/MS and 1H NMR to identify the main active constituents. In fractions with higher antioxidant activity, gallic acid (4), grandinin (5), valoneic acid dilactone (9), 1,2,3-tri-O-galloyl-β-glucose (14), 3,4,6-tri-O-galloyl-β-glucose (15) and galloyl derivative of valoneic acid dilactone (21) were identified as the major constituents. The highest hypoglycemic activity was found in fractions S6 and especially S7; the major constituents of these fractions are valoneic acid dilactone (9), three tetragalloyl glucose isomers (16–18) and 1,2,3,4,6-penta-O-galloyl-β-glucose (23), previously reported as α-glucosidase inhibitors.

  • University of Nottingham Ningbo China, China
  • Title:General limitations of the current approach in developing sustainable food system frameworks
  • Time :

Abstract:

Current studies on sustainability transitions of the food system (FS) are limited. The tools for assessing FS sustainability and enhancing FS performance are still lacking, highlighting the critical role of developing an assessment indicator framework for assisting sustainable FS transitions. This study seeks opportunities for optimizing existing FS frameworks that address the triple burden of malnutrition and FS sustainability. It ex- amines FS frameworks and other food system-related frameworks such as those linked to food security, food sovereignty, and so on, unveiling the general limitations of current approaches and methodologies in FS frameworks and other related frameworks. To our knowledge, it is the first study to discuss the gaps of FS frameworks regarding their coverage on the food lifecycle and their representation of FS’s multidimensionality. The results indicate that most FS frameworks and related frameworks are conceptual. The most frequent limi- tations are no targeting audience, no coverage of the food disposal stage, and no institutional/political dimen- sion/indicators. Some frameworks have no multi-stakeholder inputs, no coverage of food input and/or food storage stages, no economic or nutritional dimension/indicators, while only a few frameworks involve statistical/ empirical methods or quantitative indicators. Other limitations regarding language, data, and time are also identified. Finally, this study suggests developing a comprehensive multi-dimensional urban food system framework considering the full life cycle of food and combining FS-related perspectives with the five dimensions of environmental, economic, institutional, socio-cultural, and nutritional sustainability to mitigate the lifecycle and sustainability dimension issues and gaps.

Biography:

Tong Zou is a PhD student of the Sustainable Built Environment Research Group at the University of Nottingham Ningbo China. Tong holds a B.Sc. with honours in Integrated Science, minor in Statistics, minor in Technology, Society and Environmental Studies from Carleton University, Canada. In respond to global water crisis, she developed a model prototype of the proposed integrated radiative air well by applying the bio-mimicry features of the Namibia Beetle (Stenocara gracilipes) for her honour’s thesis. Tong is graduated from University of New South Wales with a M.Sc. in Environmental Management. During her postgraduate study, she worked on the project “Urban Metabolism and the Urban Metabolism-Urban Sustainability-Smart Cities Nexus”. During her gap year, Tong Zou worked as a research internship at the Centre of Air pollution energy and the health Research (CAR), Australia; a project assistant of the International Cooperation Centre of Ecology and Environment of Sichuan Province, China; an ecology and environment technological assistant of Sichuan Investment Evaluation and Performance Appraisal Centre of Ecology and Environment, China. Currently, Tong works on the research project on ‘A framework for enhancing urban food system sustainability in smart resilient cities in China’.

  • National Institute of Crop Science, Rural Development Administration, Republic of Korea
  • Title:Structural and physicochemical properties of resistant starch from Korean rice cultivars
  • Time :

Abstract:

Resistant starch (RS) is not hydrolyzed into D-glucose in the small intestine and ferments in the large intestine. Rice (Oryza sativa L.) is a major source of carbohydrates and plays an important role in providing energy to the body. The purposes of this research were to elucidate the starch characteristics of different amylose contents in various rice cultivars developed by the National Institute of Crop Science and enhance use of resistant starch (RS)-containing “dodamssal” (DDS) rice as a health-promoting low-glycemic-index (GI) food.
Non-digestible starches (NDS) and native starches (NS) were isolated from four rice cultivars: Baegokchal (BOC), Ilmi (IM), Mimyeon (MM), and DDS. MM- and DDS-derived NS showed high amylose and low rapidly digestible starch contents as well as high slowly digestible starch and RS proportions. The BOC, IM, and MM starch crystals showed A-type X-ray diffractometry patterns. However, the DDS granules displayed a C-type crystallinity pattern with a predominant B-type and convex spherical shape. All the IM and BOC starches were hydrolyzed, with no remaining NDS residues. MM and DDS NDS showed longer average amylopectin chain length but lower molecular weight and viscosity than the NS. The DDS starch had the lowest digestibility and highest RS content, showing its potential to fight obesity and hyperglycemia.

Biography:

Dr. Jiyoung Park received her Ph. D degree from Korea University, and a master’s degree from Pusan National University in Korea. The title of her doctoral dissertation is “ Prebiotic food starch characteristics and materialization fo Dodamssal”. She has worked as a research scientist at the National Institute of Crop Science of the Rural Development Administration since 2012. Her research is focusing on newly developed domestic crops, health food materials, food processing technology. She published 60 papers in domestic and international journals, and applied for 14 patents, of which 9 were registered.

  • San Ignacio de Loyola University, Peru
  • Title:Development and Application of Biodegradable Packaging by Blown Extrusion
  • Time :

Abstract:

Most of food packaging is mainly petroleum based, trhough plastic precisely. These plastics bring many benefits such as protection, transportation and increasing the shelf life of food. Thus, plastic gained popularity over the years increasing its production and becoming the standard for food packaging. However, there are increasing concerns about its usage and the disposal due to the accumulation in natural habits.This lecture will discus the production of biodegradable food packaging using the same technologies as for plastic packaging, particularly we will discuss blown extrusion. It will contrast the laboratory production (casting technique) vs. extrusion and offer a comparison from a point of view of mechanical properties of the packaging. As applications, it will focus on fruit and vegetables.

Biography:

Alejandro Marzano-Barreda is a Professor of Food Technology and Food Packaging Design in Faculty of Food Engineering at Universidad San Ignacio de Loyola (Peru). Prior to joining the Food Engineering Faculty, Marzano-Barreda serve for 6 years as Senior R&D Specialist specialist in different fields in the agro-industrial sector such as meat, fruits a vegetable processing in Peru and Central America.
Marzano-Barreda is graduate of Zamorano University (B.Sc.Food Science and Technology, Honduras, 2013) and of Londrina State University (M.Sc. in Food Science, Brazil, 2018) where he has part of the Polibiotec research group. Marzano-Barreda is author of journal articles in the field of biodegradable packaging and active packaging.

  • University of Warsaw, Poland
  • Title:High Temperature Triggers the Antioxidant Action of Two Two Edible Isothiocyanates: Sulforaphane and Erucin. Effect of Sulfenic Acids and Methylsulfinyl Radicals as Radical Trapping Antioxidants
  • Time :

Abstract:

Sulforaphane (SFN) and erucin (ERN) are isothiocyanates (ITCs) bearing, respectively, methylsulfinyl and methylsulfanyl groups. Their chemopreventive and anticancer activity is attributed to ability to modulate cellular redox status due to induction of Phase 2 cytoprotective enzymes (indirect antioxidant action) but many attempts to connect the bioactivity of ITCs with their radical trapping activity failed. Both ITCs are evolved from their glucosinolates during food processing of Cruciferous vegetables, therefore, we studied antioxidant behaviour of SFN/ERN at elevated temperature in two lipid systems. Neither ERN nor SFN inhibit the oxidation of bulk linolenic acid (below 100C) but both ITCs increase oxidative stability of soy lecithin (above 150C). On the basis of GCMS analysis we verified our preliminary hypothesis [1] about participation of sulfenic acids and methylsulfinyl radicals as radical trapping agents responsible for the antioxidant effect of edible ITCs during thermal oxidation of lipids at elevated temperatures (above 140C).[2]

Bibliography:
[1] Cedrowski, J., Dąbrowa, K., Krogul-Sobczak, A., Litwinienko, G.A lesson learnt from food chemistry-elevated temperature triggers the antioxidant action of two edible isothiocyanates: Erucin and sulforaphane. Antioxidants 2020, 9, 1090. DOI: 10.3390/antiox9111090
[2] Cedrowski, J., Dąbrowa, K., Przybylski, P., Krogul-Sobczak, A., Litwinienko, G. Antioxidant activity of two edible isothiocyanates: Sulforaphane and erucin is due to their thermal decomposition to sulfenic acids and methylsulfinyl radicals. Food Chemistry 2021, 353, 129213. DOI: 10.1016/j.foodchem.2021.129213

  • Beni-Suef University, Egypt
  • Title:Electrochemical Determination of Verapamil Hydrochloride Using Carbon Nanotubes/TiO2 Nanocomposite Based Potentiometric Sensors in Surface Water and Urine Samples
  • Time :

Abstract:

This study aims to apply a current progress on the construction and sense of carbon paste sensors based on carbon nanotubes (CNTs)/ TiO2 nanocomposite for verapamil hydrochloride determination. The role affecting the behavior of ionophore, lipophilic anionic additive as well as plasticizer is discussed carefully. The developed sensors were abbreviated as β-CDCPE and VER-PTCPE. These sensors exhibited excellent Nernstian behavior with linear dynamic ranges of 6.2 × 10-7 – 1.0 × 10-2 and 7.4 × 10-7 – 1.0 × 10-2 mol L-1, detection limits 2.0 × 10-7 and 3.5 × 10-7 mol L-1 and quantification limits 6.6 × 10-7 and 1.1 × 10-6 mol L-1 for β-CDCPE and VER-PTCPE, respectively. The investigated sensors showed adequate selectivity toward the target ion against some inorganic cations, neutral species and Diltiazem hydrochloride (drug with similar structure). The proposed potentiometric sensors were successfully performed for drug determination in pharmaceutical products, spiked surface water and human urine samples with good recovery data (98.46 and 99.06) for β-CDCPE and VER-PTCPE, respectively.

Biography:

I received my BSc, MSc and Ph. D degrees in Analytical Chemistry from Faculty of Science, Beni-Suef University, Egypt. My research is focused on ion-selective electrodes for drug determination and effect of nanomaterials on potentiometric sensors. I am preparing sensors for determination of inorganic compounds in variety real samples as a simple , sensitive, selective and low cost method.

  • University of Padova, Italy
  • Title:The Role of New Antioxidant Milk-Derived Bioactive Peptides in Nrf2 Activation
  • Time :

Abstract:

Milk-derived bioactive peptides can improve the treatment of many diseases, behaving as antihypertensive, antimicrobic and antioxidant agents. This study was focused on new peptides evaluated for their antioxidant properties and mechanism of action cell enviroment. Peptide enriched fractions were extracted from fermented milk and purified in order to obtain the sequence of the included bioactive peptides. Twenty-three new peptides were identified and synthesized by solid phase procedure. Their antioxidant properties were analysed in vitro and in a cellular model using Caco-2 cells. Among these peptides, N-15-M, E-11-F, Q-14-R and A-17-E were selected in order to estimate their antioxidant capacity on Caco-2 cells both as protection against oxidative stress and inhibition of ROS production induced by TbOOH. In order to understand the possible action of the peptides on Keap1-Nrf2 pathway, which is involved in the response to oxidative stress, the translocation of Nrf2 from cytosol to the nucleus was taken into account. N-15-M, Q-14-R and A17-E were able to activate the Keap1-Nrf2 system, as shown by the higher amount of Nrf2 found in the nucleus with respect to the control. This modulation led to overexpression and increase of activity of antioxidant enzymes such as TrxR1, GR, NQO1 and SOD1. The interaction of these peptides with Keap1 was also studied through molecular docking analysis. The results confirmed that N-15-M, Q14-R and A-17-E interact with the residues of the Keap1 pocket involved in the binding with Nrf2, acting as disruptor of Keap1-Nrf2 interaction.

Biography:

Federica Tonolo received her master degree summa cum laude in Sanitary Biology in 2016 at University of Padova, Italy. In 2016, she won a European fellowship as part of an FSE project at University of Padova under the supervision of Prof. Maria Pia Rigobello. Currently, she is a third year PhD student in Biomedical Sciences at University of Padova in the same lab. Her major field of interest is related to the antioxidant bioactive peptides derived from food matrices, in particular milk and soy. Up to now (Jan 08, 2020) the scientific production includes 15 publications divided into 8 full papers and 6 meeting communications

  • Medical University of Havana, Cuba
  • Title:Waist / Height Index in Children 7 to 11 Years with High Birth Weight and its Relationship with Sex, Age and Diet
  • Time :

Abstract:

Obesity (OB), considered as one of the Non-Transmissible Chronic Diseases, has as its fundamental characteristics that of being prevalent at a global level, increasing in number, affecting developed and developing countries, affecting both genders, and all ages and social groups.
Objective: To identify if high birth weight is a predictive factor (risk factor) for abdominal obesity in children 7 to 11 years old, and its relationship to gender, age and diet. Method: A case-control descriptive study was carried out with children born between January 1992 and December 1995, in order to identify early risk factors (atherosclerotic accelerators) such as abdominal obesity in children aged 7 to 11, and who have a history of macrosomia or high birth weight, as well as their relationship with gender, age and diet.
Results: It was observed that the waist/height value was normal in 60.8% of the study group and in 64.00% in the control group. The difference between groups, gender, and age was not significant (P=.6859). As regards the diet in the study group (macrosomic), there was no significant association between the type of diet and waist circumference/height values, with an_ 2=0.223 and P=.6373 (not significant). In the control group (with normal weight at birth), it was found that there is a significant statistical association between the type of diet and waist circumference/height values. This means that it can be stated, with 95% reliability, that the type of diet is associated with waist/height values.
Conclusions: High birth weight is not a predictive factor (risk factor) for abdominal obesity (increased waist/height index). Gender and age are independent for abdominal obesity (macrosomic and normal weight at birth). The diet in high birth weight children is not related to the index waist-height index, which is not the case in those born with normal weight under the same conditions. The marked increase in abdominal obesity (Waist/height index) in children between 7 and 11 years old in both groups is worrying.

Biography:

Nuris Rodriguez Vargas is a Master in Comprehensive Child Care,Professor at the Medical University of Havana-Cuba, Consultant Professor of the Medical University of Havana-Cuba,Researcher on atherosclerotic risk factors(atherosclerotic accelerators) in children with high birth weight.
I have multiple research published in Cuba, Spain, Barcelona in the ELSEVIER Editorial, among others. For more than 15 years I have been dedicated to this line of Research, having won an award in the forum of Science and Technology in my Country, in addition to presenting work and Conference in other countries such as Rome, Dominican Republic .

X