Top 100 sources of cystine
Before I give you the list, let me explain how I came up with it as it is a combination of two factors: relative ratios of amino acids and protein density. In this list I only look at foods that have at least 26% of their calories from protein and then I rank them according to those with the highest relative amount of the target amino acid.
This page is static, the most accurate and current top cystine sources can be found thru my database.
Top 100 plant sources of cystine
| food name | cystine | calories |
| oat bran,raw | 0.033295 | 14.2 |
| oat bran,cooked | 0.030841 | 12.5 |
| cottonseed meal,part defatted (glandless) | 0.026232 | 7.5 |
| cottonseed flr,lofat (glandless) | 0.026229 | 6.7 |
| cottonseed flr,part defatted (glandless) | 0.026221 | 8.8 |
| wheat bran,crude | 0.023859 | 13.9 |
| lambsquarters,ckd,bld,drnd,wo/salt | 0.02125 | 10 |
| lambs quarters,ckd,bld,drnd,w/salt | 0.02125 | 10 |
| lambsquarters,raw | 0.02119 | 10.2 |
| sesame flr,part defatted | 0.020188 | 9.5 |
| sesame flour,low-fat | 0.020183 | 6.6 |
| sunflower sd flr,part defatted | 0.019809 | 6.8 |
| safflower sd meal,part defatted | 0.019231 | 9.6 |
| winged bns,mature seeds,raw | 0.018381 | 13.8 |
| soybeans,mature seeds,raw | 0.01795 | 12.2 |
| soy sau made from soy&wheat (shoyu),lo na | 0.017602 | 10.3 |
| seaweed,laver,raw | 0.017212 | 6 |
| mori-nu,tofu,silken,ex firm | 0.017162 | 7.4 |
| winged bean tuber,raw | 0.016983 | 12.8 |
| veggie burgers or soyburgers unprep | 0.016561 | 11.3 |
| sausage,meatless | 0.01646 | 13.9 |
| meat extender | 0.016452 | 8.2 |
| soy flr,full-fat,rstd | 0.016121 | 12.7 |
| soybeans,mature seeds,dry rstd | 0.016119 | 11.4 |
| soy meal,defatted,raw | 0.016107 | 7.5 |
| soybeans,mature ckd,bld,wo/salt | 0.016106 | 10.4 |
| soybeans,mature seeds,ckd,bld,w/salt | 0.016106 | 10.4 |
| soy flour,defatted | 0.016103 | 7 |
| soybeans,mature seeds,rsted,no salt added | 0.016099 | 13.4 |
| soybeans,mature seeds,rstd,salted | 0.016099 | 13.4 |
| soy flour,full-fat,raw | 0.016097 | 12.6 |
| winged bns,mature seeds,ckd,bld,wo/ salt | 0.015631 | 13.8 |
| winged bns,mature seeds,ckd,bld,w/ salt | 0.015631 | 13.8 |
| soy prot conc,produced by alcohol extraction | 0.015242 | 5.7 |
| soy prot conc,produced by acid wash | 0.015242 | 5.7 |
| peas,split,mature seeds,ckd,bld,wo/salt | 0.015228 | 14.1 |
| peas,split,mature seeds,ckd,bld,w/salt | 0.015228 | 13.9 |
| soy flr,defatted,crude prot basis (n x 6.25) | 0.015198 | 7.5 |
| peas,split,mature seeds,raw | 0.015193 | 13.9 |
| vinespinach,(basella),raw | 0.015 | 10.6 |
| mori-nu,tofu,silken,soft | 0.015 | 11.5 |
| mustard grns,frz,ckd,bld,drnd,wo/salt | 0.014978 | 8.4 |
| mustard grns,frz,ckd,bld,drnd,w/salt | 0.014978 | 8.4 |
| drumstick leaves,raw | 0.014894 | 6.8 |
| mustard grns,frz,unprep | 0.014859 | 8 |
| drumstick leaves,ckd,bld,drnd,wo/ salt | 0.014801 | 11.4 |
| drumstick leaves,ckd,bld,drnd,w/ salt | 0.014801 | 11.4 |
| soy flr,full-fat,rstd,crude prot basis (n x 6.25) | 0.014728 | 11.5 |
| soy flr,low-fat,crude prot basis (n x 6.25) | 0.014726 | 7.2 |
| soy meal,defatted,raw,crude prot basis (n x 6.25) | 0.014715 | 6.8 |
| soy flr,full-fat,raw,crude prot basis (n x 6.25) | 0.014709 | 11.5 |
| soy sau made from soy&wheat (shoyu) | 0.014496 | 6.5 |
| mori-nu,tofu,silken,firm | 0.014493 | 9 |
| asparagus,ckd,bld,drnd | 0.014167 | 9.2 |
| asparagus,ckd,bld,drnd,w/salt | 0.014167 | 9.2 |
| asparagus,raw | 0.014091 | 9.1 |
| soy prot conc,crude prot basis (n x 6.25),acid wash | 0.013924 | 5.2 |
| tofu,soft,prep w/ca sulfate&magnesium chloride (nigari) | 0.013893 | 9.3 |
| tofu,salted&fermented (fuyu),prep w/ca sulfate | 0.013865 | 14.2 |
| tofu,salted&fermented (fuyu) | 0.013865 | 14.2 |
| tofu,raw,reg,prep w/ca sulfate | 0.013861 | 9.4 |
| tofu,ex firm,prep w/nigari | 0.013852 | 9.2 |
| tofu,dried-frozen (koyadofu),prep w/ca sulfate | 0.01383 | 9.8 |
| tofu,dried-frozen (koyadofu) | 0.01383 | 10 |
| tofu,raw,firm,prep w/ca sulfate | 0.013815 | 9.2 |
| tofu,hard,prep w/nigari | 0.013801 | 11.5 |
| broadbeans,immat seeds,raw | 0.01375 | 12.9 |
| broadbeans,immat seeds,ckd,bld,drnd,wo/salt | 0.01375 | 12.9 |
| broadbeans,immat seeds,ckd,bld,drnd,w/salt | 0.01375 | 12.9 |
| kale,frz,ckd,bld,drnd,wo/salt | 0.01338 | 10.6 |
| kale,frz,ckd,bld,drnd,w/salt | 0.01338 | 10.6 |
| mori-nu,tofu,silken,lite ex firm | 0.013286 | 5.4 |
| kale,frozen,unprepared | 0.013158 | 10.5 |
| kale,scotch,ckd,bld,drnd,w/salt | 0.013158 | 14.7 |
| kale,ckd,bld,drnd,wo/salt | 0.013158 | 14.7 |
| kale,scotch,ckd,bld,drnd,wo/salt | 0.013158 | 14.7 |
| kale,ckd,bld,drnd,w/salt | 0.013158 | 14.7 |
| lentils,pink,raw | 0.013106 | 13.8 |
| soy prot isolate,prot technologies international,supro | 0.013105 | 4.4 |
| lentils,raw | 0.013101 | 13.7 |
| lentils,mature seeds,ckd,bld,wo/salt | 0.013082 | 12.9 |
| lentils,mature seeds,ckd,bld,w/salt | 0.013082 | 12.6 |
| broccoli,ckd,bld,drnd,wo/salt | 0.013025 | 14.7 |
| broccoli,ckd,bld,drnd,w/salt | 0.013025 | 14.7 |
| soy prot isolate,k type | 0.012963 | 4 |
| soy protein isolate | 0.012963 | 4.2 |
| tomatoes,orange,raw | 0.012931 | 13.8 |
| taro,leaves,ckd,stmd,w/salt | 0.012868 | 8.8 |
| taro leaves,ckd,stmd,wo/salt | 0.012868 | 8.8 |
| taro leaves,raw | 0.012851 | 8.4 |
| winged bean leaves,raw | 0.012821 | 12.6 |
| peanut flour,defatted | 0.012816 | 6.3 |
| peanut flour,low fat | 0.012811 | 12.7 |
| broadbeans (fava bns),mature seeds,cnd | 0.012797 | 13 |
| soy prot isolate,prot technologies international,proplus | 0.012791 | 4.4 |
| broadbeans (fava beans),mature seeds,raw | 0.012787 | 13.1 |
| broadbeans (fava bns),mature seeds,ckd,bld,w/salt | 0.012763 | 14.5 |
| broadbeans (fava bns),mature seeds,ckd,bld,wo/salt | 0.012763 | 14.5 |
| mori-nu,tofu,silken,lite firm | 0.01254 | 5.9 |
| natto | 0.012415 | 12 |
Top 100 animal sources of cystine
| food name | cystine | calories |
| beef,var meats&by-products,spleen,ckd,brsd | 0.028964 | 5.8 |
| beef,var meats&by-products,spleen,raw | 0.028962 | 5.7 |
| egg,white,raw,frz,past | 0.028172 | 4.9 |
| egg,white,raw,fresh | 0.02633 | 4.8 |
| egg,white,dried,stabilized,glucose red | 0.026315 | 4.3 |
| egg,white,dried | 0.025919 | 4.7 |
| egg,white,dried,pdr,stabilized,glucose red | 0.024806 | 4.6 |
| egg,white,dried,flakes,stabilized,glucose red | 0.024805 | 4.6 |
| egg,whl,dried,stabilized,glucose red | 0.023832 | 12.8 |
| egg,quail,whole,fresh,raw | 0.023831 | 12.1 |
| egg,turkey,whl,frsh,raw | 0.02383 | 12.5 |
| egg,whl,raw,frz,past | 0.023358 | 12.8 |
| egg,whl,ckd,hard-boiled | 0.023211 | 12.3 |
| egg sub,liq or frz,fat free | 0.0229 | 4.8 |
| egg,goose,whole,fresh,raw | 0.022278 | 13.3 |
| egg,whole,dried | 0.022266 | 12.5 |
| egg,duck,whole,fresh,raw | 0.022248 | 14.4 |
| pork,frsh,var meats&by-products,kidneys,raw | 0.021932 | 6.1 |
| pork,frsh,var meats&by-products,kidneys,ckd,brsd | 0.021929 | 5.9 |
| egg,whl,raw,frz,salted,past | 0.021878 | 12.6 |
| egg,whole,cooked,omelet | 0.021665 | 14.6 |
| egg,whl,ckd,poached | 0.021663 | 11.4 |
| egg,whl,raw,frsh | 0.021656 | 11.4 |
| egg,whl,ckd,fried | 0.021602 | 14.4 |
| egg,whl,ckd,scrmbld | 0.020521 | 14.9 |
| pork,frsh,var meats&by-products,liver,raw | 0.018887 | 6.3 |
| pork,frsh,var meats&by-products,liver,ckd,brsd | 0.01887 | 6.3 |
| veal,var meats&by-products,liver,raw | 0.018665 | 7 |
| beef,var meats&by-products,liver,raw | 0.018468 | 6.6 |
| caviar,black&red,granular | 0.018252 | 10.7 |
| beef,var meats & by-products,liver,ckd,brsd | 0.018088 | 6.6 |
| beef, var meats&by-products, liver, ckd, pan-fried | 0.018062 | 6.6 |
| pork,frsh,var meats&by-products,heart,ckd,brsd | 0.017924 | 6.3 |
| pork,frsh,var meats&by-products,heart,raw | 0.017892 | 6.8 |
| pork,frsh,var meats&by-products,brain,ckd,brsd | 0.017628 | 11.4 |
| quail,meat only,raw | 0.017463 | 6.2 |
| squab,(pigeon),lt meat wo/skn,raw | 0.017463 | 6.2 |
| quail,breast,meat only,raw | 0.017441 | 5.4 |
| roe,mxd sp,ckd,dry heat | 0.017435 | 7.1 |
| squab,(pigeon),meat only,raw | 0.017429 | 8.1 |
| roe,mixed species,raw | 0.017428 | 6.4 |
| quail,meat and skin,raw | 0.01732 | 9.8 |
| veal,var meats&by-products,liver,ckd,brsd | 0.017241 | 6.8 |
| veal,var meats&by-products,liver,ckd,pan-fried | 0.017209 | 7.1 |
| chicken,liver,all classes,raw | 0.016076 | 7 |
| game meat,buffalo,h2o,ckd,rstd | 0.01599 | 4.9 |
| game meat,buffalo,h2o,raw | 0.015988 | 4.9 |
| pork,frsh,var meats&by-products,lungs,ckd,brsd | 0.015723 | 6 |
| pork,frsh,var meats&by-products,lungs,raw | 0.015696 | 6 |
| lamb,var meats&by-products,lungs,ckd,brsd | 0.015694 | 5.7 |
| lamb,var meats&by-products,lungs,raw | 0.015689 | 5.7 |
| chicken,liver,all classes,ckd,pan-fried | 0.015671 | 6.7 |
| chicken,liver,all classes,ckd,simmrd | 0.015658 | 6.8 |
| goose,domesticated,meat&skn,ckd,rstd | 0.015501 | 12.1 |
| duck,wild,meat&skn,raw | 0.015442 | 12.1 |
| duck,domesticated,meat only,ckd,rstd | 0.015375 | 8.6 |
| duck,domesticated,meat only,raw | 0.015372 | 7.4 |
| beef,var meats&by-products,lungs,raw | 0.01537 | 5.7 |
| duck,wild,breast,meat only,raw | 0.015365 | 6.2 |
| goose,domesticated,meat only,ckd,rstd | 0.015361 | 8.2 |
| beef,var meats&by-products,lungs,ckd,brsd | 0.015343 | 5.9 |
| goose,domesticated,meat only,raw | 0.015341 | 7.1 |
| duck,yng duckl,dom,wh pekin,brst,meat,bnless,ckd wo/skn,brld | 0.015217 | 5.1 |
| duck,yng duckling,dom,wh pekin,leg,meat&skn,bone in,ckd,rstd | 0.015215 | 8.1 |
| duck,yng duckl,dom,wh pekin,leg,meat,bone in,ckd wo/skn,brsd | 0.015189 | 6.1 |
| duck,yng duckling,dom,wh pekin,brst,meat&skn,bnless,ckd,rstd | 0.015184 | 8.2 |
| pork,cured,ham,steak,bnless,ex ln,unhtd | 0.015082 | 6.2 |
| pork,cured,ham,whl,ln,unhtd | 0.015054 | 6.6 |
| pork,cured,ham,bnless,ex ln (approx 5% fat),rstd | 0.01505 | 6.9 |
| pork,cured,ham,whl,ln,rstd | 0.01505 | 6.3 |
| pork,cured,ham,cntr slice,country-style,ln,raw | 0.015036 | 7 |
| pork,cured,shldr,arm picnic,ln,rstd | 0.015036 | 6.8 |
| pork,cured,ham,cntr slice,ln&fat,unhtd | 0.015022 | 10.1 |
| pork,cured,ham,bnless,ex ln®,unhtd | 0.015005 | 8.9 |
| pork,cured,ham,whl,ln&fat,rstd | 0.014604 | 11.3 |
| pork,cured,ham,whl,ln&fat,unhtd | 0.014602 | 13.3 |
| pork,frsh,var meats&by-products,tongue,raw | 0.014417 | 13.8 |
| pork,cured,shldr,arm picnic,ln&fat,rstd | 0.014391 | 13.7 |
| chicken,broilers or fryers,neck,meat&skn,ckd simmrd | 0.014329 | 12.6 |
| clam,mxd sp,ckd,breaded&fried | 0.014326 | 14.2 |
| chicken,broilers or fryers,neck,meat&skn,ckd,fried,flr | 0.014161 | 13.8 |
| game meat,horse,raw | 0.013978 | 6.2 |
| game meat,horse,ckd,rstd | 0.013966 | 6.2 |
| chicken,broilers or fryers,wing,meat&skn,raw | 0.013912 | 12.1 |
| chicken,broilers or fryers,wing,meat&skn,ckd,fried,flr | 0.013903 | 12.3 |
| chicken,broilers or fryers,lt meat,meat&skn,ckd,fried,batter | 0.013843 | 11.8 |
| pork,cured,ham,bnless,ex ln®,rstd | 0.013837 | 7.5 |
| chicken,broiler or fryer,meat&skn&giblets&neck,fried,batter | 0.013835 | 12.7 |
| scallop,mxd sp,ckd,breaded&fried | 0.013835 | 12 |
| chicken,broilers or fryers,dk meat,meat&skn,ckd,fried,batter | 0.013822 | 13.6 |
| chicken,broilers or fryers,wing,meat&skn,ckd,rstd | 0.013812 | 10.8 |
| chicken,broilers or fryers,meat&skn,ckd,fried,batter | 0.013798 | 12.8 |
| chicken,broilers or fryers,thigh,meat&skn,ckd,fried,batter | 0.013744 | 12.8 |
| chicken,broilers or fryers,wing,meat&skn,ckd,stwd | 0.01374 | 10.9 |
| chicken,broilers or fryers,leg,meat&skn,ckd,fried,batter | 0.013689 | 12.5 |
| chicken,broilers or fryers,drumstk,meat&skn,ckd,fried,batter | 0.013667 | 12.2 |
| chicken,broilers or fryers,breast,meat&skn,ckd,fried,batter | 0.013647 | 10.5 |
| chicken,cnd,meat only,w/broth | 0.013643 | 7.6 |
| chicken,broilers or fryers,back,meat&skn,ckd,rstd | 0.013642 | 11.6 |
| chicken,broilers or fryers,back,meat&skn,ckd,stwd | 0.013616 | 11.6 |