scholarly journals RAPID DETECTION OF VITAMIN C CONTENT IN FRUITS AND VEGETABLES USING A DIGITAL CAMERA AND COLOR REACTION

Química Nova ◽  
2020 ◽  
Author(s):  
Wen-zhu Zhao ◽  
Ping-ping Cao ◽  
Yuan-yang Zhu ◽  
Sheng Liu ◽  
Hong-Wen Gao ◽  
...  
Keyword(s):  
Vitamin C ◽  
Rapid Detection ◽  
Fruits And Vegetables ◽  
Digital Camera ◽  
Color Reaction

scholarly journals Vitamin C Deficiency in Inflammatory Bowel Disease: The Forgotten Micronutrient

2021 ◽  
Author(s):  
Katie A Dunleavy ◽  
Ryan C Ungaro ◽  
Laura Manning ◽  
Stephanie Gold ◽  
Joshua Novak ◽  
...  
Keyword(s):  
Inflammatory Bowel Disease ◽  
Vitamin C ◽  
Bowel Disease ◽  
Fruits And Vegetables ◽  
Nutritional Assessment ◽  
Care Center ◽  
Tertiary Care ◽  
Case Series ◽  
Vitamin C Deficiency ◽  
Inflammatory Bowel

Abstract Background Micronutrient deficiencies are common in patients with inflammatory bowel disease (IBD). To date, the literature has focused on vitamin D, vitamin B12, and iron deficiencies. Methods We report a case series of 20 patients with IBD and vitamin C deficiency treated at a single tertiary care center. Results Sixteen (80%) patients had symptoms of clinical scurvy, including arthralgia, dry brittle hair, pigmented rash, gingivitis, easy bruising and/or brittle nails. Eighteen patients underwent a nutritional assessment, 10 (56%) patients reported complete avoidance of fruits and vegetables, and 3 (17%) reported reduced intake of fruits and vegetables. Conclusions Vitamin C deficiency should be considered in IBD patients, particularly those with reduced fruit/vegetable intake, as it can lead to significant signs and symptoms.

scholarly journals A Bioluminescent Sensor for Rapid Detection of PPEP-1, a Clostridioides difficile Biomarker

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7485
Author(s):  
Kevin K. Ng ◽  
Zachary E. Reinert ◽  
Jeroen Corver ◽  
Danica Resurreccion ◽  
Paul J. Hensbergen ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Rapid Detection ◽  
Point Of Care ◽  
Delayed Diagnosis ◽  
Digital Camera ◽  
Proteolytic Cleavage ◽  
Fecal Material ◽  
Turn On ◽  
Clostridioides Difficile ◽  
Specific Protease

Current assays for Clostridioides difficile in nonhospital settings are outsourced and time-intensive, resulting in both delayed diagnosis and quarantining of infected individuals. We designed a more rapid point-of-care assay featuring a “turn-on” bioluminescent readout of a C. difficile-specific protease, PPEP-1. NanoLuc, a bright and stable luciferase, was “caged” with a PPEP-1-responsive peptide tail that inhibited luminescence. Upon proteolytic cleavage, the peptide was released and NanoLuc activity was restored, providing a visible readout. The bioluminescent sensor detected PPEP-1 concentrations as low as 10 nM. Sensor uncaging was achieved within minutes, and signal was captured using a digital camera. Importantly, the sensor was also functional at ambient temperature and compatible with fecal material, suggesting that it can be readily deployed in a variety of settings.

scholarly journals PENENTUAN KADAR VITAMIN C BEBERAPA JENIS CABAI (Capsicum sp.) DENGAN SPEKTROFOTOMETRI UV-VIS

2018 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Lilis Rosmainar Tambunan ◽  
Widia Ningsih ◽  
Ni Putu Ayu ◽  
Haula Nanda
Keyword(s):  
Free Radicals ◽  
Immune System ◽  
Vitamin C ◽  
Oxidative Damage ◽  
Spectrophotometric Method ◽  
Fruits And Vegetables ◽  
Preliminary Test ◽  
The Body ◽  
Red Pepper ◽  
Pepper Sample

Vitamin C is one of the nutrients that act as antioxidants and effectively overcome free radicals that can damage cells or tissues, including protecting the lens from oxidative damage caused by radiation. Vitamin C is widely found in fruits, and vegetables, one of them in chili. Vitamin C in chili has a function as a good antioxidant for the body (able to increase the immune system absorbed by calcium in the body. This study aims to determine the levels of vitamin C contained in some types of chili using UV-Vis spectrophotometry method and conduct a preliminary test. The highest levels of vitamin C obtained by using spectrophotometric method at 200 nm wavelength were on red curly pepper (50 g/100 g) and followed by chili jablay orange-red (38 g/100 g), green cayenne (29 g/100 g), red pepper large (22 g/100 g), and large green chili (9 g/100 g). While based on preliminary test it was found that all chilies contain saponins, as well as only large red pepper (sample 1) and red curly pepper (sample 4) containing flavonoids Keywords: capsicum, chilly, spectrophotometry

scholarly journals Evaluation of different methodologies for the determination of phenolic compounds in tropical fruits

2020 ◽  
Vol 23 ◽  
Author(s):  
Karina Carvalho Guimarães ◽  
Derlyene Lucas Salgado ◽  
Elisângela Elena Nunes Carvalho
Keyword(s):  
Phenolic Compounds ◽  
Vitamin C ◽  
Fruits And Vegetables ◽  
Titratable Acidity ◽  
Natural Antioxidants ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Fast Blue ◽  
Recent Method

Abstract Phenolic compounds are natural antioxidants and can be found with abundance in fruits and vegetables. One of the first methods created for analyzing phenolic compounds was the Folin-Denis method; and hereafter, the Folin Ciocalteu method was developed and recently, one of the most recent method is the Fast Blue. Due to the importance of these compounds in food, this work aimed to determine the total phenolic compounds in three fruits, such as: Passion Fruit, “Palmer” mango and “Pera” orange. In addition, these fruits were analyzed through three different determination methods. Furthermore, the content of vitamin C, soluble solids, titratable acidity and pH of these fruits were evaluated. Based on the results, it was verified that there was no difference among the values of vitamin C, soluble solids and TA in relation to those found in the literature. When comparing the three methods (Fast Blue BB, Folin-Ciocalteu Reagent and Folin-Denis Reagent), the results showed a difference in the phenolic compounds that may be related to the distinct reagents used in each method and its different action.

scholarly journals SCDMImage: um aplicativo para detecção de características morfológicas em produtos agrícolas

2021 ◽  
Vol 1 (53) ◽  
pp. 27
Author(s):  
Valnyr Vasconcelos Lira ◽  
Francisco Fechine Borges ◽  
Jéssica Cordeiro da Silva Santos ◽  
Antônio Pedro Gomes Tabosa ◽  
Mário Eduardo Rangel Moreira Cavalcanti Mata
Keyword(s):  
Fruits And Vegetables ◽  
Mangifera Indica ◽  
Digital Camera ◽  
Morphological Characteristics ◽  
Reliable Estimate ◽  
Continuous Growth ◽  
The Masses ◽  
Cultivation Techniques

<p><span class="fontstyle0">With the evolution of cultivation techniques, the world production of fruits and vegetables has been presenting a continuous growth. Despite the increase in production, a significant portion of the harvested products is mainly lost in the post-harvest due to several factors, such as inapropriate handling, transportation and conservation, lack of selection and classification, poorly sized packaging, among others. In general, the quality of fruits and vegetables is usually evaluated by the following parameters: size, shape, mass, color, firmness, ripeness, absence of bruises and pathologies.The objective of this work was to develop an application in Matlab to detect morphological characteristics (width, length, area, perimeter) of Mangifera indica L., ‘Tommy Atkins’ mangos from images, and using the same images, estimate its weigth. The images of the mangoes were acquired with a digital camera attached to an illuminated box and later processed in an application developed in Matlab. The images showed the morphological characteristics of the samples were obtained and an equation was determined to estimate their mass. The determination of the mass from the images had a 96% correlation with the actual mass measured with a scale and it was possible to obtain a reliable estimate of the masses of the mangoes from their images.</span></p>

Stamplike flexible SERS substrate for in-situ rapid detection of thiram residues in fruits and vegetables

2021 ◽  
pp. 131570
Author(s):  
A. Lorena Picone ◽  
María Luz Rizzato ◽  
Anabela R. Lusi ◽  
Rosana M. Romano
Keyword(s):  
Rapid Detection ◽  
Fruits And Vegetables ◽  
Sers Substrate

Investigation of the Vitamin C Content of Florida Fruits and Vegetables

1940 ◽  
Vol 19 (3) ◽  
pp. 223-232 ◽  
Author(s):  
R. B. French ◽  
O. D. Abbott
Keyword(s):  
Vitamin C ◽  
Fruits And Vegetables

scholarly journals Dietary Factors Moderate the Relation between Groundwater Iron and Anemia in Women and Children in Rural Bangladesh

2019 ◽  
Vol 3 (10) ◽  
Author(s):  
Amanda S Wendt ◽  
Jillian L Waid ◽  
Sabine Gabrysch
Keyword(s):  
Iron Deficiency ◽  
Vitamin C ◽  
Fruits And Vegetables ◽  
Iron Absorption ◽  
Cluster Randomized Trial ◽  
Heme Iron ◽  
Dietary Factors ◽  
Baseline Survey ◽  
Women And Children ◽  
Cluster Randomized

ABSTRACT Background Anemia affects ∼1.6 billion people worldwide, often owing to iron deficiency. In Bangladesh, high levels of anemia have been observed alongside little iron deficiency. Elevated concentrations of groundwater iron could constitute a significant source of dietary iron. Objective We aimed to quantify the effect of groundwater iron on anemia in nonpregnant women and young children in Bangladesh, taking into account dietary factors that may affect iron absorption. Methods We analyzed data on 1871 nonpregnant women and 987 children (6–37 mo) from the 2015 baseline survey of the Food and Agricultural Approaches to Reducing Malnutrition cluster-randomized trial in Sylhet, Bangladesh. We used logistic regression with robust standard errors to assess effects of self-reported groundwater iron, dietary intake, and sociodemographic characteristics on anemia, considering interactions between groundwater iron and dietary factors. Results Groundwater iron presence was associated with less anemia in women (OR: 0.74; 95% CI: 0.60, 0.90) and children (OR: 0.58; 95% CI: 0.44, 0.76). This effect was modified by dietary factors. In women, the effect of groundwater iron on anemia was stronger if no vitamin C–rich or heme-iron foods were consumed, and there was a clear dose–response relation. In children, intake of vitamin C–rich foods strengthened the effect of groundwater iron on anemia, and there was no evidence for interaction by intake of iron-rich foods. Conclusions Heme-iron and vitamin C consumption reduced the effect of groundwater iron on anemia among women but not children in Bangladesh, which may be due to higher levels of iron deficiency and lower levels of iron intake among children. Vitamin C consumption appears to enhance iron absorption from groundwater in children and they may thus benefit from consuming more vitamin C–rich fruits and vegetables. Even among women and children consuming heme-iron or vitamin C–rich foods and groundwater iron, anemia prevalence remained elevated, pointing to additional causes of anemia beyond iron deficiency. This trial was registered at clinicaltrials.gov as NCT02505711.

scholarly journals Fruit and vegetable intakes in relation to plasma nutrient concentrations in women in Shanghai, China

2011 ◽  
Vol 15 (1) ◽  
pp. 167-175 ◽  
Author(s):  
Cara L Frankenfeld ◽  
Johanna W Lampe ◽  
Jackilen Shannon ◽  
Dao L Gao ◽  
Wenjin Li ◽  
...  
Keyword(s):  
Vitamin C ◽  
Fruits And Vegetables ◽  
Disease Risk ◽  
Vegetable Consumption ◽  
Plasma Concentrations ◽  
Nutrient Concentrations ◽  
Fruit Intake ◽  
Fruit And Vegetable ◽  
Classification Schemes ◽  
High Nutrient

AbstractObjectiveTo evaluate the validity of fruit and vegetable intakes as it relates to plasma carotenoid and vitamin C concentrations in Chinese women, using three classification schemes.DesignIntakes were calculated using an interviewer-administered FFQ. Fruits and vegetables, botanical groups and high-nutrient groups were evaluated. These three classification schemes were compared with plasma carotenoid and vitamin C concentrations from blood samples collected within 1 week of questionnaire completion.SettingShanghai, China.SubjectsParticipants (n 2031) comprised women who had participated in a case–control study of diet and breast-related diseases nested within a randomized trial of breast self-examination among textile workers (n 266 064)ResultsFruit intake was significantly (P < 0·05) and positively associated with plasma concentrations of α-tocopherol, β-cryptoxanthin, lycopene, α-carotene, β-carotene, retinyl palmitate and vitamin C. Fruit intake was inversely associated with γ-tocopherol and lutein + zeaxanthin concentrations. Vegetable consumption was significantly and positively associated with γ-tocopherol and β-cryptoxanthin concentrations. Each botanical and high-nutrient group was also significantly associated with particular plasma nutrient concentrations. Fruit and vegetable intakes and most plasma nutrient concentrations were significantly associated with season of interview.ConclusionsThese results suggest that the manner in which fruits and vegetables are grouped leads to different plasma nutrient exposure information, which may be an important consideration when testing and generating hypotheses regarding disease risk in relation to diet. Interview season should be considered when evaluating the associations of reported intake and plasma nutrients with disease outcomes.

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