Fatty Acid Profiles of Commercially Available Finfish Fillets in the United States

Abstract

Fillets of 76 finfish species (293 composites of three fish) were obtained from commercial seafood vendors in six regions of the United States (i.e., Great Lakes, Mid-Atlantic, New England, Northwest, Southeast, and Southwest). Full fatty acid profiles were determined for each species and are presented here. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have been associated with many health benefits. Thus, fillets of each species were compared for total EPA plus DHA content, which ranged from 17 mg/100 g (pangasius/swai) to 2430 mg/100 g (Chilean sea bass). Of the top ten most popularly consumed seafoods in the US, finfish, including salmon species (717-1533 mg/100 g), Alaskan pollock (236 mg/100 g), tilapia (76 mg/100 g), channel catfish (44 mg/100 g), Atlantic cod (253 mg/100 g), and pangasius/swai (17 mg/100 g), exhibited a wide concentration range of EPA plus DHA. Large variances were found within many of the farmed species analyzed, which likely stems from dietary differences in the farm-fed diet. The results of this study provide current information on a broad range of species and will help nutritionists and the public make informed decisions regarding seafood consumption.

Microwave‐Assisted, Base‐Catalyzed Synthesis of Fatty Acid Methyl Esters from Seeds and Fish Oil Supplements

“…In order to determine the amount of FA in the oil, the response factors of the standard FAME were first calculated from the standard solutions using Equation 1: where A i is the peak area of an individual standard FAME, A std is the peak area of the internal standard octadecane, W std is the weight of the internal standard, and W i is the weight of the standard FAME. All the response factors coincided with similar literature values (Cladis et al, ; Tvrzická et al, ).…”

“…where A i is the peak area of an individual standard FAME, A std is the peak area of the internal standard octadecane, W std is the weight of the internal standard, and W i is the weight of the standard FAME. All the response factors coincided with similar literature values (Cladis et al, 2014;Tvrzická et al, 2002). The weight of individual FAME in the sample was calculated using Equation 2:…”

Fatty Acid Composition and Contents of Seven Commercial Fish Species of Genus Coregonus from Russian Subarctic Water Bodies

“…2 Canonical correspondence analysis of levels of fatty acids (% of total) in species of genus Coregonus: autY-C. autumnalis from the Yenisei River (red circles); sarY-C. sardinella from the Yenisei River (black circles); pelY-C. peled from the Yenisei River (blue circles); lavY-C. lavaretus from the Yenisei River (green circles); tugY-C. tugun from the Yenisei River (violet circles); nasY-C. nasus from the Yenisei River (light-blue circles); sarS-C. sardinella from the Sobachye Lake (black squares); tugS-C. tugun from the Sobachye Lake (violet squares); nasS-C. nasus from the Sobachye Lake (light-blue squares); lavS-C. lavaretus from the Sobachye Lake (green squares); lavK-C. lavaretus from the Keret River (green diamonds); lavO-C. lavaretus from Lake Onega (green triangles); albB-C. albula from the Bolshoie Krasnoie Lake (rose crosses). Number of samples, n, for each species are given in Table 2 knowledge, the highest values of EPA + DHA content in anadromous and freshwater fish, published in available literature, were 11.06 mg g −1 wet weight in Chinook salmon (Oncorhynchus tshawytscha) [49] and 11.07 mg g −1 wet weight in lake trout (Salvelinus namaycush) [50], calculated from Table 5 of the source), respectively. 3 Mean content (mg g −1 wet weight) of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) and their sum (EPA + DHA) in species of genus Coregonus: autY-C. autumnalis from the Yenisei River; sarY-C. sardinella from the Yenisei River; pelY-C. peled from the Yenisei River; lavY-C. lavaretus from the Yenisei River; tugY-C. tugun from the Yenisei River; nasY-C. nasus from the Yenisei River; sarS-C. sardinella from the Sobachye Lake; tugS-C. tugun from the Sobachye Lake; nasS-C. nasus from the Sobachye Lake; lavS-C. lavaretus from the Sobachye Lake; lavK-C. lavaretus from the Keret River; lavO-C. lavaretus from Lake Onega; albB-C. albula from the Bolshoie Krasnoie Lake.…”

“…The lowest and the highest means, which significantly (P < 0.05) differ from each other after the Kruskal-Wallis test, are labelled with letters a and b, respectively. Number of samples, n, for each species are given in Table 2 knowledge, the highest values of EPA + DHA content in anadromous and freshwater fish, published in available literature, were 11.06 mg g −1 wet weight in Chinook salmon (Oncorhynchus tshawytscha) [49] and 11.07 mg g −1 wet weight in lake trout (Salvelinus namaycush) [50], calculated from Table 5 of the source), respectively. In our study, the maximum value for semi-anadromous species, C. autumnalis, was 17.60 mg g −1 wet weight, and for the landlocked C. lavaretus from the Sobachye Lake this value was 16.61 mg g −1 wet weight.…”

Postharvest Correlation between Swordfish (Xiphius gladius) Size and Mercury Concentration in Edible Tissues

“…To limit mercury carryover or memory effects in the instrument, a blank was run between each set of triplicates. Additional carryover effects have been noted in high-fat species (like swordfish) (10,33); to eliminate these effects, one boat with flour (100 mg) and one boat with 5 to 10% nitric acid (100 pi) were run every 15 replicates (33). Results were rejected and the analysis repeated on all samples that had a relative standard deviation of greater than 5% between the three replicates (6).…”