Day 1 :
- Food Chemistry and Nutrition |Nutrition, Health & Aging |Nutritional Therapy & Treatments|Dietary Supplements & Functional Foods|Probiotics & Prebiotics |Nutritional Biochemistry |Obesity, Diabetes & Endocrinology|Human Nutrition & Dietetics|Renal Nutrition & Metabolism |Clinical Nutrition |Nutraceuticals & Medicinal Foods|Nutritional Epidemiology & Malnutrition |Food Processing & Technology |Nutritional Neuroscience & Eating Disorders|Nutrition & Cardiovascular Health|Food & Nutritional Immunology|Nutrition Education|Pediatric & Maternal Nutrition|Diet & Appetite|Nutrition in Cancer Care
The Chinese University of Hong Kong ,China
Title: Conjugated Linolenic Acid as a Functional Food: Studies on Its Anti-tumor and Anti-allergic Activities
Time : 09:30-10:10
K.N. Leung received his B.Sc. Degree in Biochemistry from The Chinese University of Hong Kong (CUHK) and obtained the Ph.D. Degree in Microbiology and Immunology from The Australian National University. After two years of postdoctoral work at the Pathology Department of the University of Cambridge, he returned to the CUHK as a Lecturer in the Department of Biochemistry in 1983. Prof. Leung was the former Dean of General Education in Chung Chi College, the Associate Dean of Science (Education) of CUHK and the Chairman of the Hong Kong Society for Immunology. He is now an Adjunct Professor in the School of Life Sciences, CUHK and the School of Science and Engineering, CUHK (Shenzhen). His main research interests include immunopharmacological studies of natural products and Chinese medicinal herbs; cancer immunotherapy; nutrition, immunity and cancer.
Conjugated linolenic acids (CLN) are a group of positional and geometrical isomers of linolenic acid (C18:3) having three conjugated double bonds, which are relatively abundant in some plant seed oils. Recent researches have demonstrated the diverse health-promoting properties of CLN, including anti-obese, antioxidative, anti-inflammatory and anti-tumor activities. In this study, jacaric acid (8Z, 10E, 12Z-octadecatrienoic acid), a CLN isomer that is present in jacaranda seed oil, was found to inhibit the in vitro and in vivo growth of the human promyelocytic leukemia HL-60 cells, with little or no cytotoxicity towards normal cells. Mechanistic studies indicated that jacaric acid could trigger apoptosis in the HL-60 cells by inducing mitochondrial membrane depolarization, modulating the expression of apoptosis-regulatory proteins, inducing the release of mitochondrial cytochrome c, and by differential activation of caspase-3 and -9 but not caspase-8 activities in HL-60 cells. Interestingly, jacaric acid could alleviate the allergic response in a human mast cell line HMC-1 by suppressing the release of β-N-acetylglucosaminidase, tryptase and cytokines such as interleukin-4 and -13 in sensitized HMC-1 cells. Moreover, the expression of MMP-2 and MMP-9 proteins were down-regulated in jacaric acid-treated HMC-1 cells whereas the expression of TIMP1 protein was increased. Taken together, our results indicate that jacaric acid can exhibit significant anti-tumor and anti-allergic activities on human cells and therefore might be a potential functional food for the management or as an adjunct therapy for some forms of myeloid leukemia and allergic disorders.
Far Eastern Federal University ,Russia
Title: Antioxidant activities of aqueous extracts edible seaweeds from the northern coast of the sea of Japan
Time : 10:30 -11:00
Tabakaeva Oksana, doctor of technical sciences, Professor of the Department of food science and technology, School of Biomedicine, Far Eastern Federal University, is a Russian citizen. Far Eastern Federal University is the leading University of Russia in the Far East, which is actively developing scientific direction of new food technologies, and international cooperation with other universities in the world, including China. Tabakaeva Oksana has been working at the University since 1997. She is the author of 8 patents, 5 textbooks and over 150 scientific publications.Main scientific interests: study of algae and other seafood, boitechnology food, functional food
The aqueous extracts of four marine algae from the coastal areas in North Primorye, Russia, were prepared by boiling dried and frozen seaweed powder in water for 1 h, and by autoclaving each sample at 120 °C for 1 h. They were then freeze-dried and evaluated for their antioxidant activities. Boiling extracts of the seaweeds, except C. flagile, were found to have higher total phenolic contents than those obtained from the autoclave method. The antioxidant results also showed that O2•− scavenging activity existed only in the boiling extracts of C. flagile, M. greviller and G. verrucosa. In DPPH and OH• assays, however, almost all the boiling extracts were less active than the autoclave ones. Among the four alga species, S. miyabei was the most active. Both extracts of this seaweed had the highest total phenol content and also displayed the strongest DPPH and OH• inhibitory activities. A strong positive-correlation between the antioxidant potency and total phenol content of the autoclave extracts was found, while for the boiling extracts such relation was very weak. This result thus reflected that in addition to the phenolic compounds, there might be some other active components present in these extracts involved in the antioxidant activity.
Institute Of Chemical Technology,India
Title: Evaluating the stability of betalain pigments from Basella rubra in a model beverage system during storage
Time : 11:00-11:30
Consumer acceptance of food is majorly affected by its colour. Natural pigments from plant sources are receiving growing interest from food manufacturers, in order to meet consumer perception that natural is safe. The global natural food colors market was USD 1. 3 Billion in 2016 and is expected to reach USD 2.1 Billion by 2023. Betalains are one category of natural pigments which are water-soluble, vacuolar, chromoalkaloids found in plants of the order Caryophyllales. According to their chemical structure, these pigments consist of red–violet betacyanins or yellow betaxanthins. Betalains exhibit a tinctorial strength upto three times higher than anthocyanins and stability in a pH range from 3 to 7 making them suitable for medium acid and neutral foods. The scarce attention towards betalain pigments may be due to restricted number of edible betalainic sources known and also because red beet ( Beta vulgaris ) has long been the only considered source of betalain pigments. Red beet extracts contain high concentrations of labile betaxanthins, which restricts their use as food colorants. In this work, fruits of Basella rubra L. have been explored as a source of betalains. Basella rubra is an edible perennial vine native to the Indian subcontinent. It also exhibits major biological activities such as androgenic, antidiabetic, anti-inflammatory and antioxidant. The betalain content in fruit pulp (deseeded) of B. rubra was found to be 0.148 ± 0.017 g/100g which is higher than the reported highest betalainic source namely fruits of Opuntia ficus-indica containing 0.114 g/100 g. The betacyanin:betaxanthin ratio in B. Rubra was found to be around 6.34:1. The present study aims at evaluating the stability of betalain pigments from B. rubra in a model beverage system stored under specified conditions. These investigations will add value to the use of this plant source as a natural food colourant.
Title: Effects of a high-intensity interval training combined with citrulline supplementation on muscle function in obese older adults: importance of initial protein intake
Time : 11:30-12:00
Aging is associated with losses of muscle mass, strength and quality which are strong risk factors of functional incapacities. Physical activity and nutrition are two of the most promising non-pharmacological avenues to counteract functional incapacities. More precisely, High Intensity Interval Training (HIIT), a short but intense physical activity training, is recognised to improve metabolic function, aerobic capacity and body composition in older adults. Another potential avenue is L-citrulline (CIT), a non-proteogenic-amino acid which seems to prevent the loss of muscle mass and strength in older adults. Preliminary results showed a beneficial additive effect of CIT and HIIT on muscle function in obese older adults. However, it has been shown that the amount of protein intake could influence physical adaptations following exercise intervention and affect also the efficacy of CIT to improve body composition in malnourished people. We aimed to evaluate if the initial amount of protein intake could influence the combined effect of CIT to HIIT on body composition, muscle strength and functional capacities in older adults. Thirty-eight sedentary obese (criteria: % fat mass (FM)) subjects (67±5yrs) who ingested CIT (10g/d; blind-condition) and completed a 12-week elliptical HIIT program (cycle:30sec>85% and 90sec at 65% of maximal predicted heart rate; 3x30min/week) were divided a-posteriori into 2 groups according to the initial amount of protein intake (PROT-: <1g.kg-1.d-1 (n=18) vs. PROT+: >1g.kg-1.d-1 (n=20)). Functional capacities (4m-walking test, chair and step tests), physical endurance (6MWT), muscle strengths (knee extensor strength (KES), handgrip (HS)), muscle power (Leg power rig; MP), body composition (DXA) were measured pre- and post-intervention. No difference at baseline between groups except by design for protein intake ((PROT: 0.78g.kg-1.d-1 vs. PROT+: 1.33 g.kg-1.d-1). Following the intervention (CIT+HIIT), all subjects improved significantly (p<0.05) on waist circumference (103.2 vs. 100.4cm), total FM (37 vs. 35.9%) and fat-free-mass (FFM:46.5 vs. 47kg), KES (315 vs. 367N), HS (32.5 vs 34.3kg), MP (151 vs. 180W), 4-m walking test (0.74 vs. 0.68sec), step test (30 vs. 34rep), chair test (19.0 vs.15.8sec) and 6MWT (549 vs. 618m). Regarding the initial protein intake effect, PROT- decreased significantly more gynoïd (PROT-: T0:41.4-T12:39.1% vs. PROT+: T0:38.7-T12:39.1%) and leg (PROT-: T0:37.3-T12:35.2% vs. PROT+:T0:34.9-T12:34.7%) FMs and improved significantly more leg FFM (PROT-: T0:16.3-T12:16.8kg vs. PROT+: T0:16.8-T12:16.7kg)and HS (PROT-: T0:32.7-T12:35.9kg vs. PROT+: T0:32.4-T12:32.8kg) than PROT+. Our results show that CIT+HIIT combination is more beneficial in obese older adults eating initially less than 1 g.kg-1.d-1 of proteins since they had greater improvements on body composition and muscle strengths. Further randomized controlled trial are needed to confirm these promising results since protein intake was studied a-posteriori.
University of New Castle ,Australia
Title: Assessment of the in vitro antibacterial and anticancer potential of crude extract and its sub-fractions prepared from Helicteres hirsuta Lour. leaves and stems
Time : 12 :00-12:30
Hong Ngoc Thuy Pham is a lecturer in Food Science of Nha Trang University, Vietnam. She obtained BSc in Food Technology in 2004 and MSc in Post-harvest Technology in 2009 from Nha Trang University, Vietnam. She is currently undertaking PhD program at the University of Newcastle, Australia on a project entitled: “Extraction of anticancer compounds from selected medicinal plants as novel agents against pancreatic cancer cells”. Pham has published numerous publications and she is interested in exploring bioactive compounds from plant materials for utilisation in the food and pharmaceutical industries
Helicteres hirsuta Lour. (H. hirsuta) is a member of Helicteres genus of the Sterculiaceae family. This plant is widely distributed in Southeast Asian countries, and has been traditionally used as herbal medicine for the treatment of malaria and diabetes. However, there are limited studies on its biological properties. This study aimed to investigate the in vitro antibacterial and anticancer properties of the crude extract and its two sub-fractions. The crude extract was prepared from ultrasonic extraction (60 °C, 150 W for 25 min) of the dried leaf and stem in 40% methanol at a ratio of 3:100 (g/mL), and then freeze-dried to obtain the powder for further analysis. The two sub-fractions were prepared from the crude extract solution by first removing methanol, then subsequently separated using hexane, and n-butanol to obtain the saponin-enriched and aqueous fractions, which were then freeze-dried for further analysis. Antibacterial activity was assessed using the disc diffusion method and measurement of MIC values. Anticancer properties against a panel of cancer cell lines in vitro were examined using MTT and CCK-8 assays. The results revealed that the saponin-enriched fractions from H. hirsuta leaves and stems showed the highest antibacterial activity against E. coli and S. lugdunensis. In addition, these saponin-enriched fractions displayed powerful anticancer activity in vitro on a range of cancer cell lines at low doses (GI50 values of 0.36-11.17 mg/mL). Interestingly, these saponin-enriched fractions exhibited potent anti-cancer activity against two primary pancreatic cancer cell lines (MIA PaCa-2 and BxPC-3), and one secondary pancreatic cancer cell line (CFPAC-1). Therefore, these saponin-enriched fractions contain major saponin components, which posess antibacterial and anticancer properties, and thus they should be identified and separated for further assessed for their potential as food components or therapetic agents.
Title: A quantitative method for the determination of α-linolenic acid and linoleic acid in chia seed oil by high-performance liquid chromatography
Time : 12:30 -13:00
Bingbing Liu is a PhD candidate in the Department of Chemistry, Zhejiang University, China. Her research interests are food chemistry; separation and analysis of natural products.
Alpha-linolenic acid (ALA) and linoleic acid (LA), abundant in chia seed oil, are useful polyunsaturated fatty acids (PUFA) with numerous health benefits. The objective of the present study was to explore the possibilities of the direct analysis of ALA and LA in chia seed oil by reverse-phase HPLC-UV. The results showed that the HPLC-UV method proposed allowed for determining the concentrations of ALA and LA in chia seed oil without applying any isolation or derivatization step. The method was found to be fast (within 18 min), sensitive (LOQ 0.006 mg/ml for ALA and 0.02 mg/ml for LA), and precise (RSD ≤ 2 %). Thus, the proposed experimental designs were shown to offer considerable advantages over traditional derivatization approaches.
King Abdulaziz University, Jeddah Saudi Arabia
Title: Diabetes Awareness and Dietary Habits of Non-Diabetic Females in Private Universities in Jeddah City, Saudi Arabia
Time : 13:50 -14: 20
Noor Adel Hakim graduated from University of Nebraska Lincoln with first degree BSc in Dietetics (2003) and then with Master in Nutrition and Health Science in 2005. She earned her PhD in Vitamin D and health implication related to Osteoporosis and Cardiovascular risk from Nutrition and metabolism Department, University of Surrey, UK in 2012. Dr. Hakim worked as visiting professor at Department of Food and Nutrition, Gachon University, Seoul, South Korea for three years. Currently she is assistant professor in King Abdul Aziz University, Applied Medical Sciences, Clinical Nutrition Department, Jeddah Saudi Arabia.
Diabetes is one of the chronic disease affecting Saudi population. Non-medical field college students have limited information about health and science area. The purpose of this study is to investigate the level of awareness among non-diabetes female students on the diabetes and examine its association with dietary habit. Private universities in the city of Jeddah, Saudi Arabia have been targeted to recruit female students with high socioeconomic status. 141 female students participated in the study; their knowledge level have been assessed by answering short test about diabetes information. Dietary habit and related anthropometric measurements were measured. Study’s participants have good background of diabetic disease (average test score was 11.4 out of 15) specially in the disease symptoms and some of the protective factors, however they are weak in the pathological details of the disease. The majority of the students (77.3%) understand the protective factors of eating fruit and vegetables, however they are far away from the recommendation intake and were not significantly associated with diabetes awareness score. The majority of participants reported a limited consumption of fried or fat-foods and sugary drinks, ranging between never to a few times per week (73.4% and 68.8%, respectively). The mean knowledge of DM at the different frequencies of sugary drink intakes was significantly different (F=2.97; p-value=0.014). Scheffe test revealed no statistically significant difference between the groups, where all the significant levels were greater than 0.05. Further medical and healthy educational sessions such as the pathology of the diabetes disease, healthy eating habit seminars and workshops are recommended to increase non-medical field student’s awareness. This also may apply to other type of epidemiological disease since non- medical field students have limited access of information about health and disease.
Malaysian Cocoa Board Malaysia
Title: Drying kinetics and mechanical strength of wet fermented cocoa beans using the microwave laboratory dryer
Time : 14:20-14:50
Hidayatullah has a Master degree in Agricultural Machinery from Universiti Putra Malaysia. He has held various posts in Malaysian Cocoa Board amongst others as a Manager in the Cocoa Innovation and Technology Centre in Nilai Negeri Sembilan, Malaysia. His area of specialization is Mechanization and Machinery Design, Food Process Engineering and Chocolate making process and Cocoa production. Currently he is a senior research officer working in the area of cocoa drying.
Drying procedure of wet fermented cocoa beans was carried out using a specially fabricated microwave laboratory dryer. Fermented cocoa beans normally contain between 50 to 55% moisture and need to be dried to 6 to 8% (wet basis, wb) moisture levels for safe storage. Three levels of microwave power were used to dry the wet fermented cocoa beans. The moisture content of the beans was found to decrease rapidly. The increase in microwave power resulted in the increase drying rate of the cocoa beans. The experimental drying data were fitted to seven different theoretical drying models to predict the drying kinetics. Logarithmic model was found to be the best in describing the microwave drying characteristics of wet fermented cocoa beans with R2 > 0.9958. The characteristics of the drying curve of the wet fermented cocoa beans for each microwave power level were compared between the experimental and the predicted model. The mechanical strength of the beans was found to be less when dried at higher microwave power.
Malaysian Cocoa Board,Malaysia
Title: Free Radicals Scavenging Capability from Different Fractions of Cocoa Fresh Beans Aqueous Extract
Time : 14:50-15:20
Samuel has completed his PhD from National University of Malaysia. He is the researcher of Malaysian Cocoa Board, a government research institute. His expertise is cocoa based products development. Currently, he works on the potential uses of cocoa as an anti-oxidant in topical application product development.
Cocoa fresh beans aqueous extract shows high free radicals scavenging capability from various studies based on DPPH assay. Studies also showed that cocoa fresh beans aqueous extract contains few compounds which were believed contributing to the free radicals scavenging property. Nevertheless, report on which compounds or fractions from this cocoa fresh beans extract appears to be major sources in the free radicals scavenging capability is limited.
Cocoa fresh beans were extracted by water incubation at 80oC for 15 minutes. The extract was fractioned using LC-Prep system fixed with C18 (21.2 x 150mm) column and DAD detector at 280nm wavelength. Each fractions were dried under nitrogen stream at 80oC and reconstituted with 2ml distilled water. Free radicals scavenging capability of the extract and its fractions were determined based on 0.06 mM DPPH solution.
Results showed that the cocoa fresh beans extract contains four prominent fractions as detected and isolated by LC-Prep., namely fraction 1 to fraction 4. From this four fractions, only fraction 1 and fraction 2 showed positive result in free radicals scavenging capability. Fraction 1 and fraction 2 were identified as catechin and epicatechin respectively based on their retention time and mass spectrum.
Malaysian Cocoa Board ,Malaysia
Title: Effect of Pandan (Pandanus amaryllifolius) Juice Concentrations on Total Phenolic Content, Antioxidant Activity and Sensorial Quality of Cocoa Butter-Based Ice Cream
Time : 15:40-16:10
Chin Hui Han has completed her Master from University Putra Malaysia. She is the Research Officer from Malaysian Cocoa Board who involved in food product development.
The leaves of Pandanus amaryllifolius known as pandan are used widely as natural colouring and flavouring in Asian cuisines. In addition to the aromatic properties, pandan leaves contain compounds that demonstrated antiviral, antioxidant and anti-diabetic properties. The growing demand for healthier and more natural food has extended into ice cream products. Hence, the aim of the study was to study the effect of pandan juice concentrations on total phenolic content, antioxidant activity and sensorial quality of cocoa butter-based ice cream. Ice cream comprised of 6, 7 and 8% concentrations of pandan juice respectively were produced and analyzed for total phenolic content and antioxidant property was measured using DPPH (2,2-diphenyl-1-picryl-hydrazyl) radical scavenging activity. On the other hand, sensorial quality of produced ice creams were evaluated by 20 panelists in terms of colour, pandan flavour, sweetness, texture, meltability and overall acceptability using 5 point hedonic scale (score 5: extremely like; score 4: like; score 3: neither like or dislike; score 2: dislike; score 1: extremely dislike). The results showed that increase in pandan juice concentrations did not significantly affected (p>0.05) the sensory attributes for all the tested samples; however, significantly (p<0.05) increased the total phenolic content and antioxidant property of the pandan ice creams.
University of Santo Tomas, Philippines
Title: Physico-chemical Characterization and Fatty acid Profiling of Different Philippine Pili Nut(Canarium ovatum ,Engl.) Varieties
Time : 16:10-16:40
The study focused on Pili nut (Canarium ovatum), an important nut-producing tree that is endemic in the Philippines. Seven varieties of Pili nut fruit were used in the study, all of which are being cultivated in a single soil condition. The study established the macro and micro minerals as well as potential toxic metal contents of both Pili nut pulp and kernel. Further, bioaccessibility of Fe, Zn, Cu, Ca, Mg and Mn were assessed through in vitro method simulating gastric and intestinal condition. Quantification was done using recently developed plasma technique Microwave Plasma-Atomic Emission Spectrometry (MP-AES). Significant differences were observed in some established parameters which may be attributed to distinctions per variety. Major macro minerals in pulp are K (2822 to 4299 mg/100g ) and Ca (514-1092 mg/100g) while K (674-924 mg/100g), P (507- 646 mg/ 100g) and Mg (249-300 mg/100g) for the kernel. Pili nut also contains Na, Fe, Al, Zn, Mn, Cu, Ni, and Cr. Potential antioxidant Se is below the limit of quantitation, as well as the toxic metals Pb and Cd. Bioaccessibility of the pulp’s and the kernel’s minerals in the small intestine is high for Mg (pulp: 75-90 % , kernel: 54-61 %) and Ca (pulp: 15-41 % , kernel: 14-22 %) and in the following descending order: Mg > Ca > Cu > Mn > Zn > Fe. Large portion of minerals was released in the small intestine and an appreciable amount of minerals was observed in the colon. After colonic fermentation of Pili nut kernel, appreciable amounts of Mg > Ca > Cu > Mn were still available for absorption. Fe and Zn are not detected in the large intestine due perhaps to an elevated phytic acid (173-229 mg/100g). The antinutrient tannic acid is higher in pulp (109-296 mg/100g) that may also contribute to the reduced availability of some essential minerals in Pili nut pulp. The Pili pulp and kernel are sources of several essential minerals that are bioaccessible for human nutrition.
Ambrose Alli University,Nigeria
On a global scale, the most recent evidence indicates that over 400 million adults are obese while ~20 million children and 1.6 billion adults are overweight. The World Health Organization reveals that, by the year 2015, ~2.3 billion adults will be overweight and more than 700 million will be obese. In this review paper we summarized the current evidence to elucidate the impact of exercise training on biological and psychological health indices in overweight and obese individuals. Endocrine function indices that are discussed herein include leptin, adiponectin, growth hormone, and ghrelin levels. Psychological factors include anxiety and depression, body image, and motivation for exercise. Overall, exercise promotes physical and psychological health in overweight and obese individuals particularly because exercise-induced adaptations occur across a multitude of systems within the active human. The impact of exercise on specific biological and psychological health indices contributes to overall health in overweight and obese individuals.