Potato Skin Research Articles

Cadmium and lead in vegetable and fruit produce selected from specific regional areas of the UK

Cadmium and lead were determined in fruit and vegetable produce (~1300 samples) collected from a field and market basket study of locally grown produce from the South-West of Britain (Devon and Cornwall). These were compared with similarly locally grown produce from the North-East of Britain (Aberdeenshire). The concentrations of cadmium and lead in the market basket produce were compared to the maximum levels (ML) set by the European Union (EU). For cadmium 0.2% of the samples exceeded the ML, and 0.6% of the samples exceeded the ML for lead. The location of cadmium and lead in potatoes was performed using laser ablation ICP-MS. All tested samples exhibited higher lead concentrations, and most exhibited increased concentrations of cadmium in the potato skin compared to the flesh. The concentrations of cadmium and lead found in fruits and vegetables sampled during this study do not increase concern about risk to human health.

Cultivar differences of black scurf occurrence on potato tubers

Nowadays the potato skin diseases are very important factors limiting the quality of tubers. The skin diseases include also the black scurf that results from the occurrence of Rhizoctonia solani sclerotia. The study used the data regarding evaluation of infected tubers and degree of infected tubers of black scurf on the potato cultivars in 2001–2013, which were collected during the experiments in Potato Agronomy Department, at the Plant Breeding and Acclimatization Institute – National Research Institute, Division in Jadwisin, Poland. The study included 165 potato cultivars, evaluated for a period of three years or more. As a result of experiments it was found, that the share tubers with black scurf and the severity of ocurrence of R. solani sclerotia on tubers were determinded by the cultivar factors. Futhermore, it was shown that the cultivar differentiation of tubers with black scurf was formed differently than the cultivar diversity of the severity of sclerotia on the tubers. The most infected tubers were recorded in early cultivar Aruba 76.2%, while the least 9.8% in early cultivar Cedron. The lowest susceptibility to R. solani sclerotia development on tubers appeared in medium early variety Roksana – 7.1 degrees, and the highest severity of disease symptoms 3.3 degrees was observed on tubers of early variety Gracja.

Differentiating dietary and non-dietary microfossils extracted from human dental calculus: the importance of sweet potato to ancient diet on Rapa Nui

Human dental calculus is an excellent target for examining the plant component of ancient diets. Microfossils become imbedded within dental calculus throughout life, providing an overall picture of plant foods available (at least those that produce recoverable microfossils). Here we evaluate previous phytolith results (Dudgeon and Tromp, 2012) by examining starch grains from 30 human dental calculus samples from 10 archaeological sites throughout Rapa Nui (Easter Island), dating between AD 1330–1900. The unobscured starch grains recovered are consistent with descriptions of modern reference samples of sweet potato (Ipomoea batatas). These results indicate the importance of sweet potato to the Rapanui diet prior to European contact in 1722. The analysis of modern sweet potato skins show that they incorporate phytoliths as they grow in phytolith rich sediment, and we argue that the high frequency of palm phytoliths recovered from dental calculus, in conjunction with our starch results points to the consumption of sweet potato.

The Influence of Ethephon Application Timing and Rate on Plant Growth, Yield, Tuber Size Distribution and Skin Color of Red LaSoda Potatoes

Optimizing the response of growth regulators depends in part on finding the most appropriate application rate and timing. Preliminary trials indicate that ethephon (2-chloroethylphosphonic acid) may be useful for improving potato (Solanum tuberosum L.) tuber appearance and skin color of red-skinned cultivars, but relatively little is known about optimum application practices. Two separate trials were conducted at the University of Idaho Parma Research and Extension Center to evaluate the effect of ethephon foliar application timing and rate on plant growth, tuber yield, size distribution, and skin color of the cultivar Red LaSoda. Skin color was rated visually and by colorimeter at harvest and periodically throughout storage at 4 °C. In 2011, ethephon application timing did not influence plant height, total yield, tuber size or skin color but did affect some tuber size classes. In contrast, all of these parameters were significantly influenced by application timing in 2012. The optimum application timing to influence skin color was a relatively narrow window during initial flower development, to 10 days after initial flowering (coinciding with tuber initiation). Increasing rates of ethephon significantly reduced plant height, increased foliar injury symptoms, and reduced average tuber size, but did not influence total yield in Red LaSoda. Higher ethephon rates resulted in significantly darker tuber skin (lower L* values) and increased red color (increased chroma and reduce hue angle values) when compared to the non-treated control. Evaluation of samples held in storage showed that differences in skin color ratings at harvest were maintained throughout the storage period. It is concluded that two foliar applications of ethephon at a rate between 292 and 438 ml ha−1applied ten days apart, initiated at pre-bloom, will provide the optimum change in skin color and reduce average tuber size without reducing total yield.

Fertility Response of Potato to Municipal Wastewater and Inorganic Fertilizers

This study evaluated fertilizer contribution of municipal wastewater on potato (Solanum tuberosum L.) cultivation in a split-plot experiment having two factors: water quality with 5 levels and fertilizer with 2 levels. Irrigation by raw wastewater supplied 16, 13, 13, 23, 1.7, and 83% of nitrogen (N), phosphorus (P), potassium (K), sulfur (S), zinc (Zn), and boron (B) requirement of potato, respectively. Wastewater compared to freshwater, improved plant height, vigority, area coverage, leaf area index (LAI), stem per plant, number and weight of tuber per plant, above-ground dry matter (ADM), and tuber yield of potato. Averaged over 3 years, irrigation by 75 and 100% (raw) wastewater with recommended standard fertilizers produced the maximum, but identical, tuber yield. Wastewater raised N, P, and K contents in potato plants and tubers. Irrigation by wastewater could reduce the fertilizer requirement of potato by 10–15%. However, it caused high accumulation of total coliform (TC) and faecal coliform (FC) on potato skin, restricting the use of the produce.

A rapid method for quantifying chlorogenic acid levels in potato samples.

Chlorogenic acids (CGA) are found in many plant-derived foodstuffs and are claimed to have various beneficial effects on human health. Potatoes are a major component of the human diet and contain CGA, but little is known about their abundance in these important tubers. We therefore used a rapid, sensitive, and selective method for quantifying CGAs in food using ultra-high performance LC diode array detection (UHPLC-DAD). We also established an optimized sample preparation protocol based on ultrafiltration and used these techniques to quantify the CGA contents of selected potato varieties (fresh and after storage) and potato products. The measured CGA concentrations in potato skins were 37-636 mg/100 g dry weight (DW) and were three to four times greater than those in the flesh. Storage reduced the CGA levels in potatoes by up to 81%. The studied potato purees contained 4-11 mg CGA/100 g DW. In addition, the quinic acid contents of potato flesh (11-95 mg/100 g DW) and puree (11-22 mg/100 g DW) were measured using stable isotope dilution analysis. None of the tested samples contained caffeic acid. Overall, our results demonstrated that the UHPLC-DAD method can be used to rapidly quantify CGA levels in potatoes and related food products.

Effects of High Glucosinolate Mustard on Red Potato Yield and Skin Quality

Yield and disease resistance are important components influencing potato growers’ variety selection. Potato appearance, nutritional content, and specific culinary uses often affect consumer selection. A 3-year study was conducted to investigate how red potato (Solanum tuberosum L.) yield and skin quality were affected by variety and previous crop and specifically if red potato varieties would benefit from a plowed-down high-glucosinolate mustard (HGM; Brassica spp.) cover crop. The three previous crops were barley (Hordeum vulgare L.), canola (Brassica napus L.), and HGM. Each season six red varieties were planted, and yield and skin quality were evaluated. Two red varieties were planted consistently across three growing seasons, and three were similar across two growing seasons. Potatoes were harvested, washed, graded, weighed, and rated for skin surface quality. Potato yields were influenced by variety and year (due to variable environmental conditions), but the previous crop only influenced yield in the wettest year, when potato yield increased by 19%, probably from the N released from the HGM biomass. For varieties grown across similar environments, HGM cover crops resulted in a 52% lower incidence of black scurf. Thus, HGM green manures can be used to reduce soilborne pathogens.

Effect of the transition between ethylene and air storage on post-harvest quality in six UK-grown potato cultivars

SummaryLong-term storage of potato (Solanum tuberosum L.) tubers provides year-round availability of the crop, but is limited by sprouting. Continuous exposure to ethylene during storage can prolong the storage-life of potato tubers by suppressing sprouting, yet there is little information on the effects of ethylene on a wide selection of common cultivars. Six different UK potato cultivars were stored at 6ºC for 30 weeks under continuous 10 µl l 1 ethylene treatment, under continuous air, or transferred from air to 10 µl l 1 ethylene at the first indication of sprouting, or vice versa. Fructose, glucose, and sucrose concentrations were determined in samples of tuber flesh and in potato skins. Texture and sprouting were measured after 30 weeks in cold storage. Ethylene applied at the first indication of sprouting was as effective at suppressing further sprouting in ‘Desiree’, ‘Sylvana’, and ‘Fianna’ as observed when ethylene was applied continuously and resulted in no additional ethylene-induced sugar accumulation. The texture data suggested that ethylene treatment had an indirect effect on tuber firmness through the inhibition of sprout growth only in ‘Sylvana’ potato tubers. The implications of these results are that the cost of ethylene application in cold-store rooms could be reduced by manipulating the timing of its application.

Control effects of biomass on dual symbiosis system, soil microbe and yield of soybean

通过田间试验研究施入生物质对根瘤菌、丛枝菌根真菌与大豆双共生系统、土壤微生物及大豆产量的影响。生物质设置秸秆、土豆皮、食用菌废弃料、大豆浸出液4个处理。分别在植株生长第4片复叶展开(V5)、结荚始期(R3)和鼓粒盛期(R6)取样测定。研究结果表明: 外施4种生物质对大豆双共生系统均有不同程度促进作用, 且生物质对大豆菌根形成的促进作用较对根瘤形成的促进更显著, 持续时间更长。在4种生物质中, 秸秆处理表现效果最佳, 不仅对大豆双共生系统、土壤细菌、真菌数量有增效作用, 同时对大豆产量有协同促进作用。在R6期大豆有效根瘤数量、丛枝菌根真菌侵染率、土壤细菌数量分别较对照增加238.46%、26.28%、131.99%, 产量较对照增加69.78%, 且秸秆容易获得, 施用方便, 是有效提高大豆产量的生物质。大豆浸出液处理对大豆双共生系统促进显著, 在R6期有效根瘤数量较对照增加89.74%, 同时丛枝菌根真菌侵染率较对照增加31.23%, 但由于此处理播种前采用浸种方式, 对大豆子叶造成较大损伤, 使保苗率严重降低从而导致产量相对较低。食用菌废弃料和土豆皮处理在3个生育时期对大豆双共生系统的作用不尽一致, 但R6期2个处理的丛枝菌根真菌侵染率和土壤中真菌数量都极显著高于对照。

Bioavailability and Bioremediation of Diesel Fuel-Contaminated Soil Using Organic Wastes as Supplement

Soil and surface water contamination by organic compounds is a common occurrence in most developing countries. This caused harmful effects on the environment and human beings. Bioremediation can be an alternative green technology for remediation of such hydrocarbon-contaminated soil. Bioremediation of soil contaminated with 5% and 10% (w/w) diesel fuel amended with 10% soy cake (SC), potato skin (PS) and tea leaf (TL) was studied for a period of 84 days, under laboratory condition. At the end of 84 days, the highest percentage of oil biodegradation (88%) was recorded in soil contaminated with 5% diesel fuel and amended with SC, while only 75% of oil biodegradation was recorded in soil contaminated with 10% diesel fuel and amended with SC. Bioavailability which was assessed by the hydroxypropyl cyclodextrin (HPCD) extraction method showed that bioavailability reduced in soil amended with organic wastes. Results of first order kinetic model to determine the rate of biodegradation of diesel fuel revealed that soil amended with SC recorded the highest kinetic rate of oil biodegradation 0.148 day and 0.103 day in 5% and 10% oil pollution. The results of this study demonstrated the potential of SC as a good substrate to enhance remediation of hydrocarbon contaminated soil at low pollution concentration.

Organic wastes to enhance phyto-treatment of diesel-contaminated soil

Toxic inorganic and organic chemicals are major contributors to environmental contamination and pose major health risks to human population. In this work, Dracaena reflexa and Podocarpus polystachyus were investigated for their potential to remove hydrocarbons from 2.5% and 1% diesel fuel-contaminated soil amended individually with 5% organic wastes (tea leaf, soy cake and potato skin) for a period of 270 days. Loss of 90% and 99% oil was recorded in soil contaminated with 2.5% and 1% oil with soy cake amendment, respectively, compared with 52% and 62% in unamended soil with D. reflexa at the end of 270 days. Similarly, 84% and 91% oil loss was recorded for P. polystachyus amended with organic wastes in 2.5% and 1% oil, respectively. Diesel fuel disappeared more rapidly in the soil amendment with SC than in other organic waste supplementation. It was evident that plants did not accumulate hydrocarbon from the soil, while the number of hydrocarbon-utilizing bacteria was high in the rhizosphere, thus suggesting that the mechanism of the oil degradation was rhizodegradation. The kinetic model result indicated a high rate of degradation in soil amendment with SC at 1% with D. reflexa compared with other treatments. Thus, a positive relationship was observed between diesel hydrocarbon degradation with plant biomass production. Dracaena reflexa with organic wastes amendment has a greater potential of restoring hydrocarbon-contaminated soil compared to P. polystachyus plant.

Potential of biowastes to remediate diesel fuel contaminated soil

<p>The unintended release of hydrocarbons into the environment can negatively impact human and animal health, and could further change the characteristics of soils. The aim of the present work was to investigate the rate of biodegradation at 10 and 20% diesel fuel in contaminated soil amended with 10% of three different organic wastes (tea leaf, soy cake, and potato skin) for a period of 126-days. 82 and 25% oil loss was recorded in soil amended with soy cake at 10% and 20 % oil pollution, respectively. Diesel fuel utilizing bacteria counts were high in all organic wastes amended treatments, ranging from 150×106 to 176 ×106 CFU g-1 of soil, compared with the unamended control soil which gave 23 ×106 CFU g-1. Dehydrogenase activity in soil was markedly enhanced by the application of organic wastes. Diesel oil composition monitored by GC/MS indicated complete degradation of n-C9 – C12. First-order kinetic model showed that among the three organic wastes used, soy cake had the highest biodegradation rate constant of 0.153 day−1 at 10% oil pollution, while biodegradation rate was 0.033 day−1 at 20% oil pollution. The results showed there is potential for soy cake, potato skin and tea leaf to enhance biodegradation of diesel in contaminated soil.</p>

Sweet potato skin provides health benefits in Caenorhabditis elegans model

We apply the Caenorhabditis elegans(C. elegans) model to assess functional foods and agricultural by products that potentially increase satiety, regulate food intake and improve insulin sensitivity. Sweet potato (Ipomoea batatas) is one of the most important food crops in the world offering fiber, carbohydrates, protein, vitamins, iron, and calcium. The sweet potato skin (SPS) a by‐product of processing is rich in anti‐oxidant phenolic compounds, fibers and other nutrients. We evaluated the effect of SPS on intestinal fat deposition (IFD), lifespan, and mRNA expression of ckr‐1, gcy‐8, cpt‐1, and cpt‐2 in the C. elegans model. Animals were fed with SPS (0%, 0.5%, 1%, and 3%) or SPS plus 2% glucose. Pharyngeal pumping rate (PPR), a surrogate marker of lifespan, was monitored periodically. At the end of the study, Nile red, a fluorescent lipid staining dye, was applied to the worms. Fluorescent microscopy of Nile red was used as a qualitative measure of the IFD. The SPS sustained PPR in wild type C. elegans (N2), sir‐2.1(ok434)IV or daf‐16(mgDf50)I null mutants. In the presence of 2% glucose, the PPR was elevated in sir‐2.1(ok434)IV or daf‐16(mgDf50)I. The IFD was reduced in wild type C. elegans (N2), but increased in sir‐2.1(ok434)IV by SPS treatments. These data suggested that SPS reduces IFD and sustain lifespan in C. elegans model. The use of the SPS as a food ingredient has potential to help control weight in humans. The neuronal control of the fat deposition requires further clarification. The nematode strains used in this work were provided by the Caenorhabditis Genetics Center (University of Minnesota, MN), which is funded by the NIH National Center for Research Resources (NCRR). Support: LSU AgCenter, LA BoR (LEQSF(2010–13)‐RD‐B‐02), and ConAgra Foods® Inc., ConAgra Mills™.

Dynamics of diesel fuel degradation in contaminated soil using organic wastes

Bioremediation is an effective measure in dealing with such contamination, particularly those from petroleum hydrocarbon sources. The effect of soil amendments on diesel fuel degradation in soil was studied. Diesel fuel was introduced into the soil at the concentration of 5 % (w/w) and mixed with three different organic wastes tea leaf, soy cake, and potato skin, for a period of 3 months. Within 84 days, 35 % oil loss was recorded in the unamended polluted soil while 88, 81 and 75 % oil loss were recorded in the soil amended with soy cake, potato skin and tea leaf, respectively. Diesel fuel utilizing bacteria counts were significantly high in all organic wastes amended treatments, ranging from 111 × 106 to 152 × 106 colony forming unit/gram of soil, as compared to the unamended control soil which gave 31 × 106 CFU/g. The diesel fuel utilizing bacteria isolated from the oil-contaminated soil belongs to Bacillus licheniformis, Ochrobactrum tritici and Staphylococcus sp. Oil-polluted soil amended with soy cake recorded the highest oil biodegradation with a net loss of 53 %, as compared to the other treatments. Dehydrogenase enzyme activity, which was assessed by 2,3,5-triphenyltetrazolium chloride technique, correlated significantly with the total petroleum hydrocarbons degradation and accumulation of CO2. First-order kinetic model revealed that soy cake was the best of the three organic wastes used, with biodegradation rate constant of 0.148 day−1 and half life of 4.68 days. The results showed there is potential for soy cake, potato skin and tea leaf to enhance biodegradation of diesel in oil-contaminated soil.

Dynamics Phytoremediation of Zn and Diesel Fuel in Co-contaminated Soil using Biowastes

In phytoremediation of co-contaminated soil, developing strategies is a major challenge for simultaneous and efficient remediation of multiple pollutants. A lab-scale experiment was set up to investigate the efficiency of adding 5% (w/w) individually of three different organic waste amendments [tea leaves, soycake and potato skin] to enhance the phytoaccumulation of Zinc and diesel fuel co-contaminated soil by Dracaena reflexa for a period of 180 days. Soil contaminated with Zn (80 mg kg-1DW) was spiked with an initial concentration of diesel fuel (25000 mg kg-1DW). Application of biowastes demonstrates significant degradation of DF compared to control soil. The highest rate of oil degradation was recorded in co-contaminated soil planted with D. reflexa and amended with SC (85%) followed by PS and TL (60 and 53.3%). Although the plants did not accumulate any hydrocarbon from the contaminated soil but there was significant bioaccumulation of Zn in the root and stem of Dracaena plant which was observed. At the end of 180 days, 16.5 mg/kg and 12.2 mg/kg of Zn in the root and the steam of D. reflexa was recorded. Results indicated that the D. reflexa could effectively extract Zn from Zn-contaminated soils even in the presence of diesel fuel concentration.

An experimental study on bio-oil production from co-pyrolysis with potato skin and high-density polyethylene (HDPE)

In order to investigate the synergistic effect of high dense polyethylene (HDPE) addition to potato skin (pS) during co-pyrolysis, pure HDPE was pyrolysed as a model compound for determination of the optimum process conditions. Thermal decomposition of pure HDPE was performed at constant heating rate of 5°Cmin−1 under various pyrolysis temperatures (400, 420, 450, 470, 500 and 550°C) and sweeping gas flow rates (100, 200, 400 and 800cm3min−1). The maximum bio-oil yield was 56% at 500°C under sweeping flow rate of 400cm3min−1. Then, co-pyrolysis of pure HDPE-pS and waste HDPE-pS mixtures were pyrolysed with various proportions such as 1:0, 1:1, 1:2, 2:1 and 0:1. The yield of liquids produced during co-pyrolysis enhanced with increasing weight ratio of HDPE in mixtures. Obtained bio-oils were analyzed in detail with various spectroscopic and chromatographic methods. Co-pyrolysis oil had higher carbon and hydrogen contents, lower oxygen contents with higher heating value than those of pyrolysis. It was concluded that addition of HDPE improved the liquid yields in terms of both quality and quantity.

Using Potato Peels as a Natural Coagulant in Drinking Water Treatment Plant “La Diana”

The following thesis presents the results of an analysis of experimental type, since residues of potato processing are not taken advantage of the best way by industries, causing organic waste and a bad use of biomass. That is why you want to evaluate their power coagulant in potable water treatment. Suspended particles impart undesirable color and turbidity superficial surface waters. Using chemicals such as aluminum sulfate can remove a significant proportion of the suspended solids, clarifying drinking water for subsequent stabilization. In this study we compared mixtures potato skins and aluminum sulphate, to evaluate which formulation is most suitable as coagulating agent in the treatment of drinking water, maintaining its characteristics of pH, color and turbidity. Through jar testing determined the optimal dose of aluminum sulfate ( 8 mg / L, standard formulation ) , in clarifying water sample Cane River and the gorge red (color of 41 UPC , 2 NTU turbidity and pH 7.76) and compared with other formulations of potato skins and aluminum sulfate. The results indicate that the greatest reduction in color was obtained with treatment 3 (2.5 g potato peel) and similarly for the pH (7.46), thus the results of these two parameters are within the values required by the standard. Turbidity removal was the same in all treatments

Calcium Mitigated Potato Skin Physiological Disorder

Russeting of smooth-skinned potato varieties affect the protective characteristics of the skin against water loss and pathogens invasion. A distinctive russeting disorder, differs from previously reported tuber blemishes, has been observed in the Negev area of Israel and was named ‘Magen russeting’ after one of the repeatedly affected plots. The russeted skin appears as protruding dark-brown patches on the surface of the tubers. Histological studies identified the russet as old skin cells that remain adhered to the newly formed skin layers below them. Phytopathological tests and rDNA pyrosequencing analysis for whole bacterial community suggested that ‘Magen russeting’ is a physiological disorder. Mineral analysis of isolated pure skin samples indicated that russeted skin areas have higher concentrations of Ca and lower concentrations of K than the smooth skin of normal tubers, irrespective of CaCl2 or KCl fertilization of the soil prior to sowing, or of the irrigation regime during the growing season. Nevertheless, application of CaCl2 prior to tuber-seed sowing reduces the rate of affected mature tubers and the severity of the russeting.

Potato consumption among children and adolescents, ages 2 to 18, in the U.S

Potatoes are an important and affordable source of potassium (K) and dietary fiber (DF). We examined potato consumption using recent data from the 2005–2006 and 2007–2008 National Health and Nutrition Examination Survey for children and teens ages 2–18 y. Appropriate survey weights were used to calculate average consumption of white potatoes, including baked, boiled, roasted, stewed, stuffed, mashed, French fried, potatoes with sauce, hash browns, homefries, potato skins and potato salad. Among males, average calories (kcal) from white potatoes increased from 45 kcal in early childhood to 79.5 kcal among teens. On average, girls 2–4 consumed 46.4 kcal and females 14–18 consumed 61.5 kcal from white potatoes. Males 2–4, 5–8, 9–13, and 14–18y consumed an average of 29.2, 34.6, 39.7, and 54.8 kcal from French fried potatoes, respectively. Females 2–4, 5–8, 9–13, and 14–18y consumed about 34.4, 48.3, 45.3, and 34.1 kcal from French fried potatoes, respectively. We also examined consumption of white potatoes and French fried potatoes from school cafeterias for children 5–18y. Less than 1 percent of total kcal came from white potatoes and French fried potatoes from school cafeterias. A 10‐strip (115 kcal) serving of oven‐baked potato fries provides 325 mg K, 1.6 g DF and 0.7 g saturated fat. Encouraging consumption of potatoes may be an effective way to increase K and DF among children and teens.

Potato consumption among adults in the U.S.

According to CDC, 26.3 percent of U.S. adults consumed the recommended 3 servings of vegetables per day in 2009. Potatoes, one of the most commonly consumed vegetables, are an important and affordable source of potassium (K) and dietary fiber (DF). We examined potato consumption using data from the 2005–2006 and 2007–2008 National Health and Nutrition Examination Survey for males and females aged 19–30, 31–50, 51–70, and 71+ y. Appropriate survey weights were used to calculate average consumption of white potatoes (WP) on the day of the survey, including baked, boiled, roasted, stewed, stuffed, mashed, French fried (FF), potatoes with sauce, hash browns, homefries, potato skins and potato salad. Males 19–30, 31–50, 51–70, and 71+y consumed an average of 92.7, 64.1, 67.1, and 62.2 calories (kcal) a day from WP, respectively. Females 19–30, 31–50, 51–70, and 71+ consumed a daily average of 61.4, 51.5, 36.3, and 35.7 kcal from WP, respectively. Average kcal from FF potatoes declined from 78.5 and 39.4 calories among men and women 19–30 to 9.7 and 4.6 calories among men and women 71+. Among adults 19–99, 50 percent of adults did not eat any WP on the day of the survey, and the 90th percentile of WP consumption was 103 grams, or less than one medium potato. Seventy‐five percent of adults did not eat FF potatoes on the day of the survey. Encouraging potato consumption may be an effective way to increase vegetable consumption among adults.