Research Article Effects of Acute Consumption of Noni and Chokeberry Juices Vs
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Hindawi Evidence-Based Complementary and Alternative Medicine Volume 2019, Article ID 6076751, 9 pages https://doi.org/10.1155/2019/6076751 Research Article Effects of Acute Consumption of Noni and Chokeberry Juices vs. Energy Drinks on Blood Pressure, Heart Rate, and Blood Glucose in Young Adults Dariusz Nowak , Michał Gos´lin´ ski , Anna Wesołowska, Karolina Berenda, and Cezary Popławski Department of Nutrition and Dietetics, Faculty of Health Sciences, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun´, Bydgoszcz, Poland Correspondence should be addressed to Dariusz Nowak; [email protected] Received 13 June 2019; Revised 19 July 2019; Accepted 4 August 2019; Published 18 August 2019 Academic Editor: Pratibha V. Nerurkar Copyright © 2019 Dariusz Nowak et al. +is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. +e purpose of this study has been to determine the effect of acute consumption of noni and chokeberry juices vs. energy drinks on blood pressure, heart rate, and blood glucose. +e subjects divided into 4 groups, which consumed three portions of noni or chokeberry juices (30 mL or 200 mL, respectively) and energy drink (ED) or water (200 mL) at one-hour intervals. All participants had their blood pressure (BP), both systolic and diastolic BP (SBP and DBP), as well as heart rate (HR) and blood glucose (BG), measured. Consumption of noni juice caused a significant decrease in SBP and DBP of 5.0% and 7.5%, respectively, while, the consumption of chokeberry juice slightly decreased only DBP by 3.6%. On the contrary, consumption of three portions of EDs caused a significant increase in DBP by 14.7%. +e BG of participants consuming noni juice decreased by 7.3%, while the consumption of EDs increased BG by as much as 15.8%. Acute consumption of noni juice contributed to a significantly decreased SBP, DBP, and HR as well as a mild reduction of BG. Consumption of chokeberry juice caused only a slight reduction of DBP. Contrary to juices, EDs consumption resulted in an increase of blood pressure (especially DBP) and blood glucose. +e results of the study showed that noni juice may be effective in lowering blood pressure and blood sugar levels, but there is a need to continue research on the long-term effect of this juice. 1. Introduction antioxidants, and it is relatively high in potassium (ca. 150 mg/100 mL) [2, 3]. +e potassium content of noni juice +e fruit of noni (Morinda citrifolia L.) originates from is similar to other common juices, e.g., orange juice, tomato Southeast Asia (Polynesia and India), but it is also grown in juice [4], and chokeberry juice [5]. Potassium promotes a South America and the Caribbean Islands [1]. Traditionally, healthy heart rhythm, muscular contraction, nerve function, juice extraction is preceded by fermentation, and juices are energy production, and fluid balance. Moreover, potassium best made from 45-day-old fruit, which has the most ben- helps to lower blood pressure by minimizing the effects of eficial content of bioactive compounds [1, 2]. Noni fruit juice salt [2]. On the contrary, twelve compounds have been (NJ) is roughly comparable to apple juice in its nutritional identified in noni juice, of which nine have been quantified, analysis although it is somewhat lower in calories. +e and these include phenolic compounds such as coumarins reason is that noni fruit contains over threefold less total (scopoletin and esculetin), flavonoids (rutin, quercetin, carbohydrates than apples do. Moreover, NJ is low in quercetin derivative, isoquercitrin, and kaempferol), phe- protein, calories, and fat and has no cholesterol. Noni is a nolic acid (vanillic acid), vanillin, and iridoids (asperulosidic fairly good source of vitamin C (53.2 mg/100 mL) and other acid and deacetylasperulosidic acid). Iridoids have been 2 Evidence-Based Complementary and Alternative Medicine identified as the major compounds in noni juice, next to consent after reading the purpose and schedule of the re- flavonoids such as rutin and scopoletin [6]. Noni juice has search. Originally, 96 volunteers were recruited. +e partic- been found to contain some quantities of resveratrol and ipants were asked to abstain from drinking alcohol or taking phenolic acids (mainly ferulic and caffeic acids) [7]. +e any supplements (for at least 24 h prior to the experiment) presence of numerous bioactive compounds has justified and to exclude from their diet (for at least 12 h before the test) the classification of Morinda citrifolia as one of the dietary sources of caffeine such as coffee, tea, and cola type of drinks. components which have a positive impact on the cardio- In addition, the research participants were requested not to do vascular system, especially preventing hypertension, ath- any excessive physical activity prior to the test. Before the erosclerosis, and dyslipidemia [8, 9]. Its positive influence tests, all subjects were informed about the research objective on human health caused that noni juice has been classified and schedule, after which they signed a written consent form in the EU as “novel foods,” whereas in the USA, it is de- to participate in the study. Finally, 88 subjects took part in the scribed as a “nutritional supplement.” Nevertheless, there study. Eight people did not participate (either did not arrive, are no scientific studies published that include noni con- failed to follow the guidelines, or were afraid of blood tests). sumption guidelines. Typically, it is recommended to Subjects were divided into 4 groups: 1st—consuming 30 mL consume 30–60 mL·NJ, but ill people are suggested to drink noni juice (noni group); 2nd—consuming 200 mL chokeberry as much as 180 mL of noni juice [2]. juice (chokeberry group); 3rd—consuming 200 mL energy Chokeberry is a plant which belongs to the family drink (ED group); 4th—drinking 200 mL water (control Roseaceae. +ree species of chokeberry are distinguished: group). +e assignment of participants to each group was Aronia arbutifolia, Aronia prunifolia, and Aronia melano- random, aided by a random number generation formula (an carpa. Among berry plants, chokeberry is distinguished by its MS Excel application). Before the onset of the tests, the high polyphenol content, with a prevalent share being an- participants received verbal instructions. thocyanins and proanthocyanidins [10]. Considering an- thocyanins, chokeberry juice (ChJ) is the richest in cyanidin- 2.2. Samples. Organic noni fruit and chokeberry juices, both 3-galactoside and cyanidin-3-arabinoside. It also contains a rich source of polyphenols, were used for the study. +e phenolic acids, mainly chlorogenic and neochlorogenic acids juices were cold-pressed from whole fruits. Chokeberry [11–13]. Compared to noni, the content of vitamin C in originated from Poland, while noni came from French chokeberry is small (from 0.013 to 0.27 mg/g dry matter), but Polynesia. Juices underwent mild flow pasteurization (the the potassium content is considerable among all bionutrients temperature not exceeded 80°C) in order to preserve nu- (up to 2.18 mg/g dry matter) [14]. Chokeberry has a higher trients. +e ED group was given to consume one of the most antioxidant capacity than other berries, such as blackberries, popular energy drink, which contained 32 mg of caffeine per raspberries, cranberries, or blueberries [15]. Similar obser- 100 mL. +e energy drink was purchased in a local grocery vations had been previously reported by Slatnar et al. [16] and shop, but prior to the test, it was coloured with a food dye Kulling and Rawel [5]. and got rid of carbon dioxide. +e control group was served Intake of fruits and berries may lower blood pressure still water which had also been coloured with a food dye. (BP), most probably owing to the high content of poly- Until the tests, all the drinks (juices, EDs, and water) were phenols [17]. Conversely, it has been demonstrated that stored at room temperature. Moreover, juices and energy consumption of energy drinks (EDs) rich in caffeine and drinks were previously analyzed to determine their pH and sugar may have an adverse effect on human health, mainly antioxidant capacity (TP and DPPH). +e pH of the tested by raising arterial blood pressure and blood glucose level; in samples of juices was measured with a glass electrode at the long term, it increases the risk of cardiovascular diseases room temperature. Antioxidant capacity and total poly- and type 2 diabetes [18–23]. Cardiovascular diseases (CVD), phenol content assays were described in previously studies according to the most recent statistics, are responsible for [7]. +e information presented of energy, protein, carbo- 45% of all deaths (49% in women and 40% in men). Cor- hydrates, total lipids, fiber, caffeine, taurine, inositol, etc., is onary heart disease and stroke are the major causes of death derived from the labels of the noni juice, chokeberry juice, due to CVD [24]. and energy drink samples. All data are presented in Table 1. +e purpose of this study has been to determine the effect of acute consumption of noni and chokeberry juices vs. energy drinks on arterial blood pressure, heart rate, and 2.3. Study Protocol. +e study was carried out between May blood glucose. and June 2018. On the day of the tests, all participants had fasted measured blood glucose, blood pressure (systolic and 2. Materials and Methods diastolic), and heart rate. Next, each subject consumed three portions of the drinks (described in the Samples section) at 2.1. Subjects. +e study was carried out on a group of vol- one-hour intervals. +e noni group drank 30 mL of NJ (in unteers, students of a private college (Bydgoszcz, Poland). total, 90 mL); the chokeberry group consumed 200 mL of Healthy volunteers (aged over 18 years) were recruited for the ChJ (in total, 600 mL); the ED group had 200 mL of energy study.