Marine Industry Flashcards

1
Q

what is Irelands marine sector like

A

-Seabed territory of approximately 880,000km2, more than 10 times our landmass
-Ireland’s ocean economy was €1.2 billion or about 0.8% of GDP in 2010 which has increased to €2.2 billion in 2020 1.1% GDP (2% including indirect).
-Ireland’s Established Marine Industries provided employment of 32,048 FTEs representing 93% of the total turnover and 94% of total employment in Ireland’s ocean economy.
-Marine biotechnology and bio-products industriesmake up 7% total turnover
-Seafood (fisheries, aquaculture and seafood processing) makes up 1000 million euro of contribution of income
-Ireland owns 10 times more water than Ireland

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2
Q

what is the context for seafood

A

-The seafood industry is comprised of fishing, seafood farming and processing sectors. I
-Theseafood market valueis expected to reach over 335 billion U.S. dollars by 2025.

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3
Q

what is the most commonly consumed animal and protein

A

fish

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4
Q

what are fishing methods

A

finfish, shellfish, aquaculture

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5
Q

what are some fish species in ireland

A

-species include mackerel, horse mackerel, boarfish, blue whiting, herring, cod, whiting, haddock, saithe, pollack, hake, megrim, anglerfish, plaice, sole and Nephrops
-Ireland’s top fish exports were salmon (€104 million) and mackerel (€95 million).

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6
Q

in 2020 what was the total catch of fish

A

292,200 tonnes- highest was mackerel

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7
Q

what demand is there for molluscs

A

oysters 54%,
scallops 24%,
mussels 18%
clams 4%

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8
Q

what is the catch for aquaculture

A

45400 tonnes
blue mussel, Atlantic salmon (19,000 tonnes) and Pacific cupped oyster

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9
Q

what is the catch for seaweed

A

29500 tonnes per year, including 28000 tonnes of rockweed which is used in the alginate and fertiliser industries

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10
Q

in the UK what are the highest demands of fish

A
  1. Tuna – 72 tonnes
  2. Salmon – 47 tonnes
  3. Cod – 42 tonnes
  4. Prawns – 33 tonnes
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11
Q

what nutrients can you get from fish

A

vitamin A, D, B12, zinc, iron, calcuim, protein, iodine and omega-3

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12
Q

what is PDCAAS

A

Protein digestibility-corrected amino acid score(PDCAAS) is a method of evaluating thequality of a proteinbased on both theamino acidrequirements of humans and their ability to digest it

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13
Q

what is DIAAS

A

Emerging method - DIAAS (digestible indispensable amino acid score)

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14
Q

what fish contains the most amounts of iodine

A

haddock, cod, plaice, salmon, canned tuna

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15
Q

what is methymercury

A

a neurotoxin- highest amounts in swordfish, tuna then cod
highest amounts= alaskan cod
lowest amounts= salmon
able to cross placenta and cause damage
bigger the animal- more methymercury

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16
Q

what is selenium

A

-Essential for many of the bodies natural antioxidant enzymes
-Important role in thyroid function – conversion of T4 to T3
-Essential for spermatogenesis & immune function
-albacore tuna has low amounts of mercury and high amounts of seleium

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17
Q

what are polyunstaurated fatty acids

A

-Beneficial for brain development
-Immunomodulatory properties
-CVD, inflammatory conditions

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18
Q

what is the advice for pregnancy

A
  • no more than 2 portions of oily fish a week, such as salmon, trout, mackerel or herring
  • you should eat no more than 2 tuna steaks (about 140g cooked or 170g raw) or 4 medium-size cans of tuna (about 140g when drained) per week
    -You should limit oily fish because they can have pollutants such as dioxins and polychlorinated biphenyls (PCBs) in them. If you eat too much of these, they can be harmful to your unborn baby.
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19
Q

what is seaweed

A

-High fibre content – Unique fibre – up to 50%
-Diverse range of minerals
-Some species also contain PUFA & protein
-Contains polyphenolic compounds e.g. phlorotannins
-Arsenic and Iodine issues

20
Q

what do you say for the energy (calorific value)

A

-provides
-provides at a reduced or increased rate or
-does not provide

21
Q

what do you say for nutrients or other substances

A

-contains
-contains in reduced or increased proportions or
-does not contain

22
Q

what is a nutrition content claim

A

Source of claims – 15% of RI
“High in” – 30% of RI
Can put a “source of” or “High in” on the label.
e.g. ‘Source of vitamin D’ (must contain at least 15% of the RI for vitamin D per 100g)

23
Q

what is put on a nutrient function claim

A

majority are 15%- 7.5% for drinks

24
Q

what good thing does seaweed contain

A

-They had seaweed species known to contain protein
-Protein content of seaweed varies by season and location

25
Q

what does brown seaweed contain a lot of

A

high iodine levels

26
Q

what nutrients does seaweed have

A

-fibre= probiotic
-minerals= bone health
-phytochemicals= cancer

27
Q

what nutrients does fish have

A

-protein= diabetes
-PUFAs= child deelopment
-heavy metals= autoimmunity

28
Q

what is seaweed a source of

A

fibre/ prebiotic

29
Q

what is in a a balanced gut microbiota

A

more benefitical than harmful/ opportunistic
Healthy ppl have good balance
Disrupted balance effects health

30
Q

what is in gut microbial dysbiosis

A

more harmful. opportunistic than benefitical/ commensal

31
Q

what does bad gut health cause

A

type 2 diabetes, IBD, IBS, obesity- Disbalance range of disease, One way to overcome this is to change diet. To balance again

32
Q

what is probiotics

A

Probiotics is the deliverence of live bacteria

33
Q

what is prebiotics

A

Prebiotics is the delivery of food for the good bacteria that is already there

34
Q

what do pro an prebiotics do

A

they both remove bad bacteria and increase good bacteria

35
Q

what foods are high in prebiotics

A

wheat, onions, leeks and potatoes

36
Q

what are the prebiotics in seaweed

A

ulvan, xylan and alginate laminarin

37
Q

what do alginates and agar form

A

Alginates and agar are dense hydrocolloid compounds that form gels.

38
Q

what is depolymerisation

A

reducing its gelling properties and increasing fermentability & consumer acceptability

39
Q

how do we check these seaweed fibres stimulate good bacteria

A

collect and anyalise fecal samples

40
Q

what is the traditional role of protein

A

-Muscle biosynthesis
-Hormone/protein formation – insulin, haemoglobin, myoglobin, etc.
-Energy source – AA’s can be used as an energy source.
-We are now discovering other functional roles for both proteins and amino acids.

41
Q

what are the different types of hydrolysis

A

acid, microbial and enzymatic hydrolysis

42
Q

what is glucose

A

Glucose is a form of carbohydrate, also known as sugar

43
Q

what is insulin

A

Insulin, secreted from the beta cells of the pancreas in response to raised blood glucose.

44
Q

what does insulin encourage

A

Insulin encourages muscle, red blood cells, and fat cells to absorb glucose and therefore decreased blood glucose concentrations

45
Q

what can protein effect

A

glycaemic control

46
Q

what is diabetes

A

lifelong condition with serious complications- stroke, cardiovascular disease, diabetic retinopathy and nuropathy

47
Q

what is glycaemic control

A

stimulates insulin release and inhibits glucagon release to lower blood glucose